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    Wyświetlanie 1-23 z 23
    Tytuł:
    A Triassic spider from Italy
    Autorzy:
    Dalla Vecchia, F.M.
    Selden, P.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/20484.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Triassic
    spider
    Italy
    Friularachne rigoi
    geological setting
    Opis:
    A new fossil spider from the Triassic (Norian) Dolomia di Forni Formation of Friuli, Italy, is described as Friularachne rigoi gen. et sp. nov. This find brings the number of known Triassic spider species to four. The specimen is an adult male, and consideration of various features, including enlarged, porrect chelicerae, subequal leg length, and presence of a dorsal scutum, point to its identity as a possible member of the mygalomorph superfamily Atypoidea. If correct, this would extend the geological record of the superfamily some 98–115 Ma from the late Early Cretaceous (?Albian, c. 100–112 Ma) to the late middle–early late Norian (c. 210–215 Ma).
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gastroliths in an ornithopod dinosaur
    Autorzy:
    Cerda, I A
    Powiązania:
    https://bibliotekanauki.pl/articles/20438.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Gasparinisaura cincosaltensis
    geological setting
    dinosaur
    paleontology
    ornithopod dinosaur
    fossil vertebrate
    gastrolith
    Opis:
    Gastroliths (stomach stones) are known from many extant and extinct vertebrates, including dinosaurs. Reported here is the first unambiguous record of gastroliths in an ornithopod dinosaur. Clusters of small stones found in the abdominal region of three articulated skeletons of Gasparinisaura cincosaltensis were identified as gastroliths on the basis of taphonomic and sedimentologic evidence. The large number of stones found in each individual, their size, and the fact that Gasparinisaura cincosaltensis was herbivorous, all suggest that they were ingested as a result of lithophagy rather than accidental swallowing.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A termite from the Late Oligocene of northern Ethiopia
    Autorzy:
    Engel, M.S.
    Pan, A.D.
    Jacobs, B.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/20549.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    termite
    Late Oligocene
    Ethiopia
    Stolotermitidae
    fossil record
    geological setting
    paleontology
    Chilgatermes diamatensis
    Opis:
    Termites of the family Stolotermitidae are a relict lineage of primitive Isoptera. The fossil record of Stolotermitidae is exceptionally poor, with only two Miocene (Neogene) species documented to date. Herein, a new genus and species of Paleogene termites is described and figured from the Late Oligocene (28–27 Ma, Early Chattian) of northwestern Ethiopia (Amhara Region, Chilga Woreda). Chilgatermes diamatensis gen. et sp. nov., is most similar to genera of the Stolotermitidae, Archotermopsidae, and Termopsidae but can be distinguished on the basis of forewing venational details. The genus is tentatively placed in the Stolotermitidae: Porotermitinae. Chilgatermes diamatensis is the first fossil termite from Ethiopia and, indeed, the first from the entire African continent.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biodiversity evolution through the Permian-Triassic boundary event: Ostracods from the Bükk Mountains, Hungary
    Autorzy:
    Forel, M.-B.
    Crasquin, S.
    Hips, K.
    Kershaw, S.
    Collin, P.-Y.
    Haas, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/23146.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    biodiversity
    evolution
    Permian
    Triassic
    ostracod
    Ostracoda
    Bukk Mountains
    geological setting
    paleontology
    systematics
    Hungary
    Opis:
    One of the most complete Permian–Triassic boundary sections located in the Bükk Mountains (Hungary) was sampled for ostracod study. Seventy−six species are recognized, belonging to twenty genera. Fifteen new species are described and figured: Acratia? jeanvannieri Forel sp. nov., Acratia nagyvisnyoensis Forel sp. nov., Bairdia anisongae Forel sp. nov., Bairdia davehornei Forel sp. nov., Callicythere? balvanyseptentrioensis Forel sp. nov., Cytherellina? magyarorsza− gensis Forel sp. nov., Eumiraculum desmaresae Forel sp. nov., Hollinella fengqinglaii Crasquin sp. nov., Hungarella gerennavarensis Crasquin sp. nov., Langdaia bullabalvanyensis Crasquin sp. nov., Liuzhinia venninae Forel sp. nov., Liuzhinia bankutensis Forel sp. nov., Microcheilinella egerensis Forel sp. nov., Reviya praecurukensis Forel sp. nov., Shemonaella? olempskaella Forel sp. nov. One species is renamed: Bairdia baudini Crasquin nom. nov. Comparison of the Bálvány North section with the Meishan section (Zhejiang Province, South China), Global Boundary Stratotype Sec− tion and Point (GSSP) of the Permian–Triassic Boundary (PTB), reveals discrepancies linked to the environmental set− ting and particularly to bathymetry. The stratigraphical distribution of all the species is given and diversity variations are discussed. The Bálvány North section exhibits the lowest extinction rate of all PTB sections studied for ostracods analysis associated with a high level of endemism.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Brachiopods from the uppermost Lower Ordovician of Peru and their palaeogeographical significance
    Autorzy:
    Gutierrez-Marco, J C
    Villas, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/22645.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    systematics
    Peru
    Celtic Province
    Lower Ordovician
    brachiopod
    Ordovician
    geological setting
    paleogeography
    Ahtiella
    geographic setting
    Brachiopoda
    paleontology
    Opis:
    The studied brachiopod assemblages from the uppermost Lower Ordovician beds of Peru are of very low diversity and are among the northernmost known strata of that age in South America. They have been collected at the Carcel Puncco canyon of the Inambari River, near San Gabán in the easternmost Eastern Cordillera. Of the six species described, Euorthisina orthiformis and Paralenorthis immitatrix were already known from the Bolivian outcrops of the same Andean Eastern Cordillera; two species are new: Ahtiella zarelae Villas sp. nov. and Paralenorthis carlottoi Villas sp. nov. The new species of Ahtiella, of late Floian age, represent the oldest record of the genus characteristic of Celtic assemblages. During the early Mid Ordovician the genus migrated eastward from this region into the north margin of proto−Avalonia and after that, in Llanvirn times, into Baltica. During the early Llanvirn Ahtiella also migrated westward reaching the Precordillera Argentina region. Brachiopod faunal affinities suggest that there was a closer proximity of Avalonia with the Central Andean Basin, in similar temperate latitudes, than with the Southwestern European Platform, placed in very high latitude. Paralenorthis does not give any palaeogeographical signal, since it is known from all latitudes and palaeocontinents. Nevertheless, the occurrence of Euorthisina reinforces the Gondwanan signature of the region, since this genus spread during the Arenig throughout the middle latitude belt at the Gondwana margins, although it also colonised sub−polar latitudes, coinciding with the Llanvirn transgression over North Gondwana.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ordovician ostracods from East Central Iran
    Autorzy:
    Ghobadi Pour, M.
    Williams, M.
    Vannier, J.
    Meidla, T.
    Popov, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/22059.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    geographic setting
    Iran
    Ordovician
    Ostracoda
    Shirgesht Formation
    brachiopod
    geological setting
    ostracod
    paleontology
    trilobite
    systematics
    ostracod fauna
    biogeography
    stratigraphy
    Opis:
    Ordovician ostracods are described for the first time from Iran, enhancing the record of this group from the Lower Palaeozoic of the Middle East. The ostracods occur in the Shirgesht Formation, in the east central part of the country, and comprise Ogmoopsis achaemenid sp. nov., Cerninella aryana sp. nov., Ordovizona amyitisae sp. nov., cf. Aechmina? ventadorni, Vogdesella sp., and podocope taxa tentatively identified as species of Longiscula, Pullvillites, and Rectella. These taxa were hitherto unknown from this region. The ostracod−bearing interval is associated with trilobites (Neseuretinus) and brachiopods (Nicolella) that suggest a late Middle Ordovician age. Although the ostracod fauna is small, it demonstrates biogeographical links at genus−level, and possibly at species−level, with the fauna of the late Middle Ordovician Travesout Formation of western France, which also lay in a peri−Gondwanan palaeogeographical setting. It also suggests the potential use of some ostracods as stratigraphical tools for correlating Ordovician rock successions between Europe and the Middle East.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Middle Cambrian lingulate brachiopods from the Tarbagatay Range, Kazakhstan
    Autorzy:
    Popov, L E
    Holmer, L E
    Gorjansky, V J
    Powiązania:
    https://bibliotekanauki.pl/articles/21219.pdf
    Data publikacji:
    1996
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    brachiopod fauna
    Kostjubella relaxata
    geological setting
    Acrotretida
    Kazakhstan
    Cambrian
    taxonomy
    Stilpnotreta galinae
    Brachiopoda
    systematic palaeontology
    Opis:
    Early Middle Cambrian (Amgian) lingulate brachiopods from the Tarbagatay Range in eastern Kazakhstan represent mostly endemic taxa, which may suggest that the Tarbagatay Range was relatively isolated from adjacent terranes during that time; only Kleithriatreta indicate similarity with the Australian part of Gondwana, as well as with the south and central Kazakhstanian terranes. Late Middle Cambrian (Mayan) taxa from the same area are mostly cosmopolitan. Kostjubella relaxata gen. et sp. n., Prototreta (?) dolosa sp. n. and Stilpnotreta galinae sp. n. are proposed.
    Źródło:
    Acta Palaeontologica Polonica; 1996, 41, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Echinoid burrow Bichordites monastiriensis from the Oligocene of NE Italy
    Autorzy:
    Bernardi, M
    Boschele, S.
    Ferretti, P.
    Avanzini, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/22207.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    echinoid burrow
    Bichordites monastiriensis
    Oligocene
    Italy
    trace fossil
    fossil
    paleontology
    Bichordites
    Upogebia
    foredeep
    geological setting
    Opis:
    Several specimens of trace fossil Bichordites monastiriensis were discovered in two shallow water Oligocene sandstone beds from Valsugana (Trentino, NE Italy) representing the oldest documented occurrence for this ichnospecies. They are grazing−crawling (pascichnion−repichnion) structures and are occasionally associated with enlarged structures that can be interpreted as resting traces (cubichnia) and assigned to the ichnogenus Cardioichnus. The resulting Bichordites–Cardioichnus compound trace fossil is here described for the first time. In the basal part of some specimens, skeletal remains of Eupatagus ornatus were found in life position. This founding enables to widen the spectrum of known Bichordites tracemakers. Exceptional conditions of preservation of one specimen extending in two beds recording different environmental conditions gave an opportunity to document the effects of various taphonomical histories on the preservation of this traces.
    Źródło:
    Acta Palaeontologica Polonica; 2010, 55, 3; 479-486
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New blattarians and a review of dictyopteran assemblages from the Lower Cretaceous of Mongolia
    Autorzy:
    Vrsansky, P
    Powiązania:
    https://bibliotekanauki.pl/articles/20184.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Cretaceous
    blattarian
    Mantodea
    systematics
    mantis
    paleontology
    dictyopteran
    Isoptera
    Lower Cretaceous
    termite
    geological setting
    Mongolia
    Blattaria
    cockroach
    Opis:
    Dictyopteran assemblages (cockroaches, mantises and termites) from Mongolia were uniform, being composed of the same genera throughout the Early Cretaceous (more than 30 million years), corresponding to the “dry and warm Baissa type” assemblages from Siberia. The assemblage from Shin−Khuduk is exceptional, consisting of a single identifiable blattulid species, Vrtula sama gen. et sp. nov. Assemblages from Eastern Erdenyi−Ula, Khurilt, Kholbotu−Gol, and Shar−Tologoy are composed of species already known from the richest Lower Cretaceous locality Bon Tsagaan, but species representation in the various assemblages differs considerably. Nuurcala srneci sp. nov. from Khurilt Bed 210/24, with a forewing length under 12 mm, is the smallest and best−studied example of the cosmopolitan Mesozoic family Caloblattinidae. The last occurrence of the predominantly Palaeozoic family Phyloblattidae is reported from Bon Tsagaan.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New finds of stegosaur tracks from the Upper Jurassic Lourinha Formation, Portugal
    Autorzy:
    Mateus, O.
    Milan, J.
    Romano, M.
    Whyte, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/22280.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    stegosaur
    new track
    Upper Jurassic
    Jurassic
    Lourinha Formation
    Portugal
    paleontology
    Deltapodus brodricki
    fossil record
    geological setting
    Opis:
    Eleven new tracks from the Upper Jurassic of Portugal are described and attributed to the stegosaurian ichnogenus Deltapodus. One track exhibits exceptionally well−preserved impressions of skin on the plantar surface, showing the stegosaur foot to be covered by closely spaced skin tubercles of ca. 6 mm in size. The Deltapodus specimens from the Aalenian of England represent the oldest occurrence of stegosaurs and imply an earlier cladogenesis than is recognized in the body fossil record.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extremely rare Turonian belemnites from the Bohemian Cretaceous Basin and their palaeogeographical importance
    Autorzy:
    Kostak, M.
    Wiese, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/21051.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    rare belemnite
    belemnite
    Turonian
    Turonian belemnite
    Bohemia
    Cretaceous
    paleogeography
    geological setting
    paleontology
    systematics
    Praeactinocamax bohemicus
    Praeactinocamax strehlensis
    Opis:
    New records of extremely rare late Turonian belemnites are described from the Úpohlavy working quarry in the Bohemian Cretaceous Basin. These specimens are referred to Praeactinocamax bohemicus (Stolley, 1916). An alveolar fragment possibly represents Praeactinocamax strehlensis (Fritsch, 1872) and would be the third find of this species ever recorded. All finds derive from a thin horizon in the uppermost part of the Hudcov limestone (Teplice Formation, uppermost Subprionocyclus neptuni Ammonite Zone). The small faunule most likely had its origin in a taxon from the Praeactinocamax manitobensis/walkeri/sternbergi group of the North American Province, and its occurrence in Europe can be seen in the context of a southward shift of Boreal taxa in the course of a late Turonian cooling event.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uwarunkowania geologiczne wybranych wysadów solnych w Polsce i ich przydatność do budowy kawern do magazynowania wodoru
    Geology of selected salt domes in Poland and their usefulness in constructing hydrogen storage caverns
    Autorzy:
    Czapowski, G.
    Tarkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061644.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    podziemne magazynowanie wodoru
    wysady solne
    parametry geologiczne
    Niż Polski
    underground hydrogen storage
    salt domes
    geological setting
    Polish Lowlands
    Opis:
    Podziemne magazynowanie wodoru stanowi alternatywną formę magazynowania energii. Zatłoczony gaz w sytuacji nadwyżek energetycznych może być uwalniany i spalany w odpowiednich instalacjach w momencie wzrostu zapotrzebowania na energię. Do najbardziej efektywnych form takiego magazynowania należą kawerny w wysadach zbudowanych z soli cechsztynu, które na obszarze Niżu Polskiego intrudowały w nadległe utwory mezozoiku. Siedem spośród 27 wysadów solnych spełnia parametry geologiczne (minimalna grubość serii solnej rzędu 1 km, maksymalna głębokość występowania zwierciadła solnego <1 km), pozwalające je wskazać jako przydatne do budowy kawern magazynowych wodoru. Do najlepszych/optymalnych struktur należą wysady Rogóźno i Damasławek oraz w równym stopniu przydatne są dwa bliźniacze wysady – Lubień i Łanięta. W świetle obecnej wiedzy geologicznej mniej perspektywicznymi strukturami są wysady Goleniów i Izbica Kujawska (wysad Izbica Kujawska wymaga kompleksowego rozpoznania geologicznego). Ostatnią z analizowanych struktur, wysad Dębina, ulokowaną w centrum eksploatowanego odkrywkowo złoża węgla brunatnego „Bełchatów”, uznano za nieprzydatną dla tej formy magazynowania. Opisane wysady solne są również przydatne do magazynowania innych gazów np. gazu ziemnego czy powietrza, gdyż ich magazynowanie wymaga spełnienia podobnych warunków geologicznych.
    Underground hydrogen gas storage might be the alternative energy supplier. Filled-up during energy surplus could be utilized during energy shortage by combustion in special installations. Salt caverns within the salt domes are being considered as one of the optimal places for such energy storage. Caverns within the domes of Zechstein salts that intruded into the surrounding Mesozoic strata of the Polish Lowlands are among the most effective underground storages. Seven out of 27 analyzed salt domes have been recommended for hydrogen storage construction based on the geological parameters (i.e. minimum thickness of the salt body should be about 1 km and its top at a depth less than 1 km). The best structures are the Rogóźno and Damasławek domes and two twin-forms – the Lubień and Łanięta domes of equal usefulness. Less perspective structures, based on the present geological knowledge, are the Goleniów and Izbica Kujawska domes. The latter would still require basic geological work. The last analyzed structure, the Dębina dome, located in the centre of the active lignite open-pit “Bełchatów”, has been excluded from future consideration. These salt domes are also suitable for the storage of other gases, i.e. natural gas and air, as their storage requires similar geological setting.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2018, 472; 53--81
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeobiological and palaeoenvironmental significance of the Pliocene trace fossil Dactyloidites peniculus
    Autorzy:
    Uchman, A.
    Pervesler, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/21237.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Dactyloidites peniculus
    geological setting
    Neogene
    Pliocene
    fossil
    gardening
    marine flooding
    paleobiology
    paleoenvironment
    stratigraphy
    trace fossil
    paleontology
    systematics
    ichnology
    Opis:
    The radial trace fossil Dactyloidites peniculus occurs in a deep tier in totally bioturbated shoreface sediments of Pliocene age in the Stirone Valley, N Italy, together with Thalassinoides isp. and Ophiomorpha nodosa. Long, narrow shafts running from centre of the radiating structure and abundant faecal pellets in the radial structure were discovered. The trace maker of D. peniculus, probably a polychaete, deposited the pellets deeply in the sediment, probably for reinforcement of the tubes and a gardening of microbes for feeding. This trace fossil exclusively occurs within a narrow horizon at the top of a shallowing−up section interpreted as a high−stand system tract, below a discontinuity surface capped by finer sediments. D. peniculus was formed in soft sandy sediments under stable conditions related to the latest phases of the highstand system tract. Therefore, it is a candidate for indication of similar environmental situations having a soft sandy, but stable sea floor.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Upper Eocene Foraminifera of East Poland and their palaeogeographical meaning
    Górnoeoceńskie otwornice wschodniej Polski i ich znaczenie paleogeograficzne
    Verkhneehocenskie foraminifery Vostochnojj Polshi i ikh paleogeograficheskoe znachenie
    Autorzy:
    Pozaryska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/22461.pdf
    Data publikacji:
    1977
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Upper Eocene
    Eocene
    Foraminifera
    deposit
    marine deposit
    paleontology
    microfauna
    geological setting
    ecological condition
    Siemien bed
    Eastern Poland
    Polska
    paleogeography
    Źródło:
    Acta Palaeontologica Polonica; 1977, 22, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The weathering-modified iridium record of a new Cretaceous–Palaeogene site at Lechowka near Chelm, SE Poland, and its palaeobiologic implications
    Autorzy:
    Racki, G.
    Michalski, M.
    Koeberl, C.
    Harasimiuk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/20009.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Cretaceous
    geochemical anomaly
    Lechowka n.Chelm
    Paleogene
    Polska
    anomaly
    biostratigraphy
    extinction
    geochemistry
    geological setting
    iridium
    lithology
    paleobiology
    paleontology
    weathering-modified iridium
    Opis:
    In the light of integrated biostratigraphic and geochemical data, a complete shallow−marine succession across the Cretaceous–Palaeogene (K–Pg) boundary, with the critical boundary clay coupled with a burrowed siliceous chalk (“opoka” in Polish geological literature), possibly equivalent of the basal Danian Cerithium Limestone in Denmark, has been discovered at Lechówka near Chełm, SE Poland. An extraterrestrial signature marking the K–Pg boundary is confirmed by anomalously high amounts of iridium (up to 9.8 ppb) and other siderophile elements (especially Au and Ni), as well as by an elevated Ir/Au ratio consistent with a chondrite meteoritic composition. The major positive iridium spike surprisingly occurs in Maastrichtian marls, 10 cm below the boundary clay interval, which can be explained by diagenetic mobilisation and re−concentration of the impact−derived components. Thus, intensively infiltrating, humic acid−rich ground waters during the long−lasting Palaeogene weathering in tropical humid regimes were probably responsible not only for the large−scale decalcification of the Lechówka section, but also for both downward displaced position of the iridium enrichment, a dispersed profile of this anomaly and its significantly lessened value, but still approaching an increase by a factor of 100. This modified record of the K–Pg boundary event points to a careful reconsideration of the iridium anomaly as a trustworthy marker for studying the extinction patterns across the K–Pg boundary, as supported by the recent data from New Jersey, USA.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A small camelid Hemiauchenia from the Late Pleistocene of Hidalgo, central Mexico
    Autorzy:
    Bravo-Cuevas, V.M.
    Jimenez-Hidalgo, E.
    Cuevas-Ruiz, G.E.
    Cabral-Perdomo, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/22741.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    small camelid
    camelid
    Hemiauchenia
    Late Pleistocene
    Hidalgo
    Mexico
    Camelidae
    Pleistocene
    paleontology
    geological setting
    systematics
    mandible
    dentition
    postcranial bone
    remains
    tooth
    fossil
    Opis:
    Pleistocene camels from Mexico include representatives of llamas and camels. Their record spans from the Early Blancan to the Late Pleistocene, based on several localities in the northern, northwestern and central parts of the country, with members of the genus Hemiauchenia being particularly well represented. New specimens of a small llama, collected in the state of Hidalgo, central Mexico, are assigned to Hemiauchenia gracilis owing to a combination of cranial and postcranial characters, including a short upper premolar−molar series, the presence of a two−rooted P3, molars covered by a thin layer of cementum, U−shaped molar crescents, well−developed styles and ribs, a small degree of crenulation, a relatively short lower tooth row, the lack of p1 and p3, weakly developed anteroexternal stylids, a shallow and slender mandible, and long and slender metatarsals and phalanges. The material described here extends the Pleistocene geographic distribution of H. gracilisfrom northern to central Mexico, and its biochronological range from the Early Blancan to the Late Pleistocene (Rancholabrean), thus making it the southernmost record and the geochronologically youngest occurrence of this species in North America. The mesowear pattern of the material from Hidalgo suggests that these animals were mainly browsers. Their estimated body mass resembles that of Blancan specimens from Guanajuato, implying that this species maintained approximately the same body mass throughout its biochronological range in central Mexico.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioerosion in shell beds from the Pliocene Roussillon Basin, France: Implications for the (macro)bioerosion ichnofacies model
    Autorzy:
    de Gibert, J.M.
    Domenech, R.
    Martinell, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/23006.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    France
    geological setting
    Gnathichnus pentax
    Pliocene
    Radulichnus inopinatus
    Roussillon Basin
    bioerosion
    fossil
    ichnofacies
    ichnofacies model
    ichnology
    oyster
    shell bed
    trace fossil
    Opis:
    The marine Pliocene at the locality of Nefiach (Roussillon Basin, SE France) includes several shell beds constituted by oysters and scallops that bear a diverse and abundant bioerosion trace fossil assemblage. The most abundant trace fossils are Gnathichnus pentax and Radulichnus inopinatus, produced by the grazing activity of echinoids and polyplacophorans upon algae and other microorganisms coating shell surfaces. Other bioerosion traces include polychaete dwellings (Caulostrepsis taeniola and Maeandropolydora sulcans), sponge boring systems (Entobia isp.), and rare bryozoan borings (Pinaceocladichnus isp.), predation structures (Oichnus simplex and repaired durophagous scars), and foraminiferal fixation pits (Centrichnus cf. eccentricus). The trace fossil assemblage records short−term bioerosion in shellgrounds in a moderate energy setting as evinced by the dominance of epigenic or shallow endogenic structures produced in most cases by “instantaneous” behaviors. The assemblage can be assigned to the Gnathichnus ichnofacies, and it contrasts with that found in Pliocene rocky shores in the same geographic area, which are examples of the Entobia ichnofacies. The Gnathichnusichnofacies is validated as an archetypal one and its recurrency demonstrated since the Jurassic. Entobia and Gnathichnus ichnofacies have to be used in the Mesozoic and Cenozoic as substitutes of the previously existing Trypanites ichnofacies, which is still valid in the Palaeozoic.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Metapolygnathus platform conodont species and its implications for Upper Carnian global correlations
    Autorzy:
    Mazza, M.
    Rigo, M.
    Nicora, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/22935.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Carnian
    Conodonta
    Late Triassic
    Metapolygnathus
    Metapolygnathus praecommunisti
    stratigraphy
    Triassic
    conodont
    geological setting
    new species
    paleontology
    phylogenesis
    systematics
    holotype
    Paragondolella noah
    gondolellid conodont
    Opis:
    A rich conodont fauna from two Neotethyan sections, Pizzo Mondello (western Sicily, Italy) and Pignola 2 sections (southern Apennines, Italy) includes conodonts described herein as a new species. Metapolygnathus praecommunisti sp. nov. is transitional between Paragondolella noah and Metapolygnathus communisti. The genus Metapolygnathus (including M. praecommunisti) is now characterised by posterior prolongation of the keel termination, associated with a centrally located pit and with a weak ornamentation confined to the anterior part of the platform margins. The establishment of M. praecommunisti addresses the problems related to the origin and the peculiar, probably facies−controlled, distribution of its descendant species M. communisti. Since M. praecommunisti occurs in the entire Tethys and in North America, we propose the species as a good guide fossil for global correlations, characterised by a short temporal range limited to the uppermost Tuvalian (upper Carnian). The stratigraphic occurrence of the genus Metapolygnathus is restricted to the Tuvalian–Lacian (upper Carnian–lower Norian), excluding its presence in the Julian substage (lower Carnian).
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new basal sphenacodontid synapsid from the Late Carboniferous of the Saar-Nahe Basin, Germany
    Autorzy:
    Frobisch, J.
    Schoch, R.
    Muller, J.
    Schindler, T.
    Schweiss, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/22246.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Carboniferous
    Cryptovenator hirschbergeri
    Germany
    Late Carboniferous
    phylogenetic relationship
    Saar−Nahe Basin
    Sphenacodontidae
    Synapsida
    geological setting
    new species
    paleontology
    sediment
    sphenacodontid synapsid
    systematics
    taxonomy
    Opis:
    A new basal sphenacodontid synapsid, represented by an anterior portion of a mandible, demonstrates for the first time the presence of amniotes in the largest European Permo−Carboniferous basin, the Saar−Nahe Basin. The new taxon, Cryptovenator hirschbergeri gen. et sp. nov., is autapomorphic in the extreme shortness and robustness of the lower jaw, with moderate heterodonty, including the absence of a greatly reduced first tooth and only a slight caniniform development of the second and third teeth. Cryptovenatorshares with Dimetrodon, Sphenacodon, and Ctenospondylus, but notably not with Secodontosaurus, enlarged canines and a characteristic teardrop outline of the marginal teeth in lateral view, possession of a deep symphyseal region, and a strongly concave dorsal margin of the dentary. The new find shows that sphenacodontids were present in the Saar−Nahe Basin by the latest Carboniferous, predating the record of sphenacodontid tracks from slightly younger sediments in this region.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Small shelly fossils from the argillaceous facies of the Lower Cambrian Forteau Formation of Western Newfoundland
    Autorzy:
    Skovsted, C.B.
    Peel, J.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/20504.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Brachiopoda
    Cambrian
    Forteau Formation
    geological setting
    Helcionellidae
    Hyolitha
    Lower Cambrian
    Newfoundland
    argillaceous facies
    brachiopod
    facies
    fossil
    helcionelloid mollusc
    hyolith
    mollusc
    paleontology
    small shelly fossil
    systematics
    Opis:
    A diverse fauna of helcionelloid molluscs, hyoliths, and other small shelly fossils is described from limestone layers within the Forteau Formation of the Bonne Bay region in western Newfoundland. The fauna is dominated by internal moulds of various molluscs and tubular problematica, but also includes hyolith opercula, echinoderm ossicles, and other calcareous small shelly fossils preserved by phosphatisation. Originally organophosphatic shells are comparatively rare, but are represented by brachiopods, hyolithelminths, and tommotiids. The fauna is similar to other late Early Cambrian faunas from slope and outer shelf settings along the eastern margin of Laurentia and may be of middle Dyeran age. The similarity of these faunas indicates that at least by the late Early Cambrian, a distinctive and laterally continuous outer shelf fauna had evolved. The Forteau Formation also shares elements with faunas from other Early Cambrian provinces, strengthening ties between Laurentia and Australia, China, and Europe during the late Early Cambrian. Two new taxa of problematic fossil organisms are described, the conical Clavitella curvata gen. et sp. nov. and the wedge−shaped Sphenopteron boomerang gen. et sp. nov.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Eocene scyliorhinid sharks from the Trans-Urals, Russia
    Autorzy:
    Malyshkina, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/22075.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Carcharhiniformes
    Elasmobranchii
    Eocene
    Foumtizia pattersoni
    Foumtizia zhelezkoi
    geological setting
    Late Eocene
    Premontreia
    Premontreia uralica
    Scyliorhinidae
    Siberia
    fossil shark
    locality
    paleontology
    remains
    scyliorhinid shark
    shark
    tooth
    systematics
    Opis:
    Priabonian deposits from two localities, Kurgan and Derney, in the Trans−Urals (Western Siberia) have yielded numerous selachian teeth. The carcharhiniform family Scyliorhinidae is represented by three species, including two new: Premontreia uralica sp. nov., Foumtizia zhelezkoi sp. nov., and F. pattersoni (Cappetta, 1976). Both genera are recorded from the West−Siberian Basin for the first time. Presumably all three species (including the one morphologically mimicking F. pattersoni, a species recorded from Ypresian of England) are endemic for the Trans−Urals region (contrary to the cosmopolitan lamniforms recorded previously from the area. The known distribution pattern of extant scyliorhinids supports the probability of endemism of the cat sharks from the West−Siberian Basin, which has also been isolated geographically from the Peri−Tethys during the Late Eocene marine regression. The peculiar local environmental conditions due to the Priabonian climatic cooling in the Boreal realm might have also facilitated the speciation.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Złoże kruszywa naturalnego "Mirowo II" - obraz złoża w dokumentacji geologicznej a rzeczywistość
    The aggregate deposit "Mirowo II" - deposit representation based on data compiled in a geological documentation versus reality
    Autorzy:
    Jurys, L.
    Damrat, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/170525.pdf
    Data publikacji:
    2016
    Wydawca:
    Poltegor-Instytut Instytut Górnictwa Odkrywkowego
    Tematy:
    porównanie zasobów
    wielkość wydobycia
    budowa geologiczna
    zmienność parametrów złoża
    położenie spągu złoża
    comparison of resources
    size of excavation
    geological setting
    variability of the deposit
    level of the bottom boundary
    Opis:
    Autorzy artykułu przedstawiają porównanie obrazu złoża z dokumentacji geologicznej z obrazem rzeczywistym uzyskanym w wyniku eksploatacji. Robią to na przykładzie złoża kruszywa naturalnego „Mirowo II” położonego niedaleko Gdańska, eksploatowanego w latach 2003– 014. Szczegółowe porównanie obejmuje położenie spągu złoża oraz zasobów udokumentowanych i wydobytych w poszczególnych polach obliczeniowych. W sposób ogólny odniesiono się do budowy geologicznej, genezy i metodyki wyznaczania granic złoża oraz do warunków hydrogeologicznych. W wielu przypadkach wykazano brak zgodności rzeczywistych cech złoża z poznanymi w drodze geologicznych badań rozpoznawczych, podając ich prawdopodobne przyczyny, zarówno naturalne jak i wynikające z uwarunkowań prawnych oraz przyjętej metodyki badań.
    The authors present a comparison of a model of aggregate deposit which is based on data compiled in a geological documentation with one developed using data gathered during the mining phase. The collation was done using the mining site „Mirowo II” located near Gdansk, which was operated from 2003 until 2014. This detailed comparison verifies the level of the bottom boundary of the deposit and the amount of resources initially estimated with those actually excavated from each of the calculation fields. The geological structure and the origin of deposit as well as the methodology of determining the boundaries and hydrogeological conditions were broadly described. In many cases, lack of conformity between the actual characteristics of the deposit and the model based on geological investigation was demonstrated. Its most probable causes ranged from limitations related to the geology to those resulting from the legal requirements or research methods used.
    Źródło:
    Górnictwo Odkrywkowe; 2016, 57, 2; 17-23
    0043-2075
    Pojawia się w:
    Górnictwo Odkrywkowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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