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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:
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:
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:
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:
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:
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 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:
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:
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:
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:
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
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:
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:
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
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