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Wyświetlanie 1-15 z 110
Tytuł:
New occurrence of the Ordovician eocrinoid cardiocystites: Palaeogeographical and palaeoecological implications
Autorzy:
Nardin, E
Powiązania:
https://bibliotekanauki.pl/articles/19986.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
occurrence
Morocco
taxonomy
paleobiogeography
Cardiocystites
fossil record
Gondwana
Blastozoa
Ordovician
eocrinoid
paleoecology
Eocrinoidea
paleontology
Opis:
Flattened eocrinoids are very rare in the fossil record, notably because of their fragility. Recent investigations in the Anti−Atlas (Morocco) have provided one of the oldest known specimens of Cardiocystites from the Upper Ordovician (early–middle Sandbian). This discovery increases the number of eocrinoid genera known in Morocco. This new material is the fifth published specimen of the genus Cardiocystites. It is well preserved, thus allowing morphological details, such as the location of the anal pyramid and the plane of thecal flattening, to be observed. Palaeoecological reconstruction can be deduced or confirmed from these new details. The respiration of Cardiocystites now seems due to the combination of both epidermal gaseous exchange and cloacal pumping. Stem length and synostosial articulation indicate that the stem might have been used as a mooring line allowing the theca to float in the currents. The flattening of the Cardiocystites theca seems to be an adaptation to high energy hydrodynamic conditions and cold waters. Occurrences of Cardiocystites bohemicusin Morocco, in the early–middle Sandbian, and in Bohemia, in the early Katian, indicate that the genus probably originated in the west Gondwanan margin. Migration could explain the occurrence of Cardiocystites in this area and also in Avalonia in the late Sandbian. The global sea−level rise and the presence of cool water circulation from west Gondwana to Avalonia and Laurentia in the early Sandbian favour such a hypothesis.
Źródło:
Acta Palaeontologica Polonica; 2007, 52, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Late Devonian Upper Kellwasser Event and entomozoacean ostracods in the Holy Cross Mountains, Poland
Autorzy:
Olempska, E
Powiązania:
https://bibliotekanauki.pl/articles/20081.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
ostracod
Polska
entomozoacean ostracod
Ostracoda
Upper Kellwasser Event
paleoenvironment
Famennian
stratigraphy
Frasnian
Late Devonian
Devonian
Entomozoacea
extinction
Holy Cross Mountains
paleontology
Opis:
Late Frasnian–Early Famennian entomozoacean ostracod assemblages from the Płucki section in the Holy Cross Mountains were studied to establish the effect of the “Kellwasser bio−event” on the planktonic biodiversity and faunal content. The composition of ostracod assemblages changes from a moderately diverse (10 species) Entomoprimitia–Richterina– Nehdentomis–Nandania dominated “background” assemblage characterising a pre−event interval, to an Entomoprimitia−assemblage during the event interval, and finally to a Franklinella−dominated post−event assemblage in the Middle Palmatolepis triangularis conodont Zone. The Frasnian–Famennian extinction caused substantial losses among entomozoacean lineages. In the Płucki section it occurred in two closely spaced steps within the Palmatolepis linguiformis conodont Zone. The first step, at the base of the dark cephalopod limestone (Upper Kellwasser Horizon), reduced the abundance and the species diversity of entomozoaceans to only two Entomoprimitia species. The vacant niche was then filled by the new, immigrant species Entomoprimitia (Entomoprimitia) kayseri which is dominant in the Upper Kellwasser interval. All these species were lost at the second step within the Upper Kellwasser Horizon. The entomozoaceans remained virtually absent during a long time interval between the end−Frasnian crisis and the Middle Pa. triangularis Zone. They reappear as new species from refugia lineages (Franklinella, Nehdentomis) and became widespread, indicating favourable ecological conditions. Some 13 species have been identified and assigned to seven genera. Rabienella? lagowiensis sp. nov. is proposed.
Źródło:
Acta Palaeontologica Polonica; 2002, 47, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early Norian (Triassic) corals from the Northern Calcareous Alps, Austria, and the intra-Norian faunal turnover
Autorzy:
Roniewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/20215.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Early Norian
Triassic
coral
Alps Mountains
Austria
faunal turnover
paleontology
Scleractinia
Hexanthiniaria
taxonomy
Norian
Dachstein
Tethys
Opis:
The first description of early Norian coral fauna from the Northern Calcareous Alps (Dachstein Plateau and Gosaukamm), Austria, is presented: 31 scleractinian species from 24 genera (including three corals not formally determined), and three hexanthiniarian species belonging to two genera. The stratigraphical position of the main part of the fauna discovered in the South Dachstein Plateau at the Feisterscharte is determined by means of the conodont Epigondolella quadrata (Lacian 1); single finds are from the horizons with Epigondolella triangularis and Norigondolella navicula (Lacian 3), and one close to the horizon with Epigondolella cf. multidentata (Alaunian 1). Rare corals from the Gosaukamm are from the Lacian 1 and Alaunian. Five species are described as new: Retiophyllia vesicularis, Retiophyllia aranea, Margarosmilia adhios, Hydrasmilia laciana; one new genus and species from the family Coryphylliidae, Margarogyra hirsuta; one new genus and species, Thamnasterites astreoides, cannot be assigned to a family. Two hexanthiniarian species, Pachysolenia cylindrica and Pachydendron microthallos, known exclusively from the Tethyan lower Norian, represent stratigraphically valuable species. A regularly porous coral from the family Microsolenidae, Eocomoseris, which up to now has only been known from the Jurassic and Cretaceous, is here identified from the Triassic strata (originally described as Spongiomorpha [Hexastylopsis] ramosa). Predominant taxa show solitary and phaceloid (pseudocolonial) growth forms and an epithecal wall; pennules−bearing corals are common. Carnian genera and genera typical of the Lacian and Lacian–early Alaunian prevail; a hydrozoan genus Cassianastraea has also been encountered as well as a scleractiamorph coral, Furcophyllia septafindens). The faunal composition contrasts with that of well known late Norian–Rhaetian ones, the difference being observed not only at the generic but also at the family level. The post−early Norian change in coral spectrum documents the turnover of the coral fauna preceding that at the Triassic/Jurassic boundary.
Źródło:
Acta Palaeontologica Polonica; 2011, 56, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First record of the ichnofossil Atollites from the Late Cretaceous of the Northern Apennines, Italy
Autorzy:
Serpagli, E
Powiązania:
https://bibliotekanauki.pl/articles/20846.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Apennines Mountains
ichnofossil
paleoichnology
Italy
Cretaceous
Late Cretaceous
Atollites
Upper Cretaceous
sediment
radial trace fossil
Attolites italicum
paleontology
Opis:
A new radial trace fossil, Atollites italicum ichnosp. nov., is reported from Upper Cretaceous sediments of the Northern Apennines (Italy). It is made up of several cylinder−club systems, which are interpreted as radiating in a possible faint spiral pattern from a central shaft. The pre−diagenetic reconstruction of the Atollites structure is attempted for the first time. The trace fossil may be attributed to small crustaceans or, less probably, it represents a feeding burrow of other deposit feeders.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Les Madreporaires du Jurassique superieur de la bordure des Monts de Sainte-Croix, Pologne
Górno-jurajskie Hexacorallia z obrzeżenia gór Świętokrzyskich
Verkhnejurskie Hexacorallia iz obramlenija Sventokrzhiskikh Gor, Polsha
Autorzy:
Roniewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/22388.pdf
Data publikacji:
1966
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Jurassic
paleontology
fauna
Hexacorallia
Holy Cross Mountains
new species
morphology
Źródło:
Acta Palaeontologica Polonica; 1966, 11, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
40 years of the Institute of Paleobiology of the Polish Academy of Sciences
Autorzy:
Olempska, E.
Powiązania:
https://bibliotekanauki.pl/articles/20287.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
library
publication
paleobiology
history
jubilee
Institute of Paleobiology
paleontological museum
Polish Academy of Sciences
paleontology
Źródło:
Acta Palaeontologica Polonica; 1992, 37, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correction of homonymy of generic name Cyclophyllia Roniewicz, 1989 (Scleractinia) into Cycliphyllia nom. n.
Autorzy:
Roniewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/19935.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
correction
homonym
generic name
nomenclature
paleontology
Triassic
Upper Triassic
Cyclophyllia
Scleractinia
Opis:
A new generic name, Cycliphyllia, is here proposed as a replacement name for Cyclophyllia Roniewiecz, 1989 (type species: Thecosmilia cyclica Schaefer et Senowbari-Daryan, 1978, Upper Triassic). The latter is a junior homonyme of Cyclophyllia Milne-Edwards et Haime, 1848 (type species: Cyclolites cristata Lamarck, 1801, Cretaceous), an invalid name, which is a junior synonyme of Aspidiscus Koenig, 1825 (Milne-Edwards 1857: t. 2, p. 386). This regrettable error has been noticed thanks to the List of generic names by Wells (1986). As a consequence of the above change, the orthography of the family name Cyclophylliidae Roniewicz, 1989 is here corrected into Cycliphylliidae.
Źródło:
Acta Palaeontologica Polonica; 1991, 36, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated “fungal” borings from the Early Devonian of Podolia, Ukraine
Autorzy:
Olempska, E.
Powiązania:
https://bibliotekanauki.pl/articles/21117.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
soft tissue preservation
ctenostome bryozoan
bryozoan
Early Devonian
Devonian
paleontology
Podolia
Ukraine
Bryozoa
fungi
demineralization
phosphatization
Opis:
Colonies of boring ctenostome bryozoans and microborings of “fungi” that occur in the Early Devonian (Lochkovian, ~416 Ma) of Podolia, western Ukraine, have soft−tissue preserved by phosphatization. These comprise exceptional three−dimensional body walls of feeding zooids with probable parietal muscles inserted on the cystid wall, and setigerous collars twisted within the vestibulum. The presence of collars in this Early Devonian ctenostomes proves the existence of this feature for more than 416 Ma of ctenostome evolution. Phosphatized remains of the zooid walls are interpreted as relicts of the originally chitinous cystid walls. This is the first record of soft−tissue fossilization in a boring bryozoan. The presence of cavities (specialized heterozooids), empty or filled with laminated calcium phosphate, is also documented in bryozoans for the first time. These cavities are interpreted as “store−rooms” in which the bryozoans accumulated nutrients. The new taxon, Podoliapora doroshevi gen. et sp. nov. is described. In additional, phosphatised fungi−like endoliths co−occur with bryozoans.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pelecypods from the Upper Eocene of East Poland
Małże górnoeocenskie wschodniej Polski
Dvustvorchatye verchnego ehocena Vostochnojj Pol’shi
Autorzy:
Wozny, E.
Powiązania:
https://bibliotekanauki.pl/articles/21456.pdf
Data publikacji:
1977
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
pelecypod
sand deposit
macrofauna
species list
Upper Eocene
Eocene
Eastern Poland
Polska
Źródło:
Acta Palaeontologica Polonica; 1977, 22, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crinoids from the Famennian of the Holy Cross Mountains, Poland
Autorzy:
Gluchowski, E
Powiązania:
https://bibliotekanauki.pl/articles/21839.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Famennian
Polska
skeletal element
recovery
extinction
crinoid
Holy Cross Mountains
paleontology
Crinoidea
Opis:
Disarticulated crinoid columnals and pluricolumnals from the Famennian of the Holy Cross area were analysed. Sixteen crinoid taxa were distinguished, only one of which is based on stems attributed to a calyx−based genus, and the others are classified within artificial supraspecific units. Two of these are new: Schyschcatocrinus levis sp. nov. and Cosmocrinus polonicussp. nov. The described crinoid fauna shows distinct extinction−recovery temporal pattern: the Frasnian–Famennian crisis affected 50% of stem−based families and 70% of late Frasnian stem−based genera. The succession of crinoid faunas represented by three faunal intervals has been identified and correlated to standard conodont zones: FIa, Palmatolepis triangularis Zone (relic “Frasnian” crinoid assemblage Schyschcatocrinus delicatus–Calleocrinus kielcensis), FIb, Pa. crepida to Pa. marginifera zones (crinoid assemblage Calleocrinus kielcensis–Schyschcatocrinus levis) and FIc, Pa. trachytera to S. praesulcata zones (crinoid assemblage Cosmocrinus polonicus–Acbastaucrinus affectatus). The succession was controlled mostly by eustatic factors.
Źródło:
Acta Palaeontologica Polonica; 2002, 47, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late Triassic spinicaudatan crustaceans from Southwestern Poland
Autorzy:
Olempska, E
Powiązania:
https://bibliotekanauki.pl/articles/22647.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
crustacean
Triassic
Polska
shell structure
Spinicaudata
paleoecology
Crustacea
taxonomy
paleontology
spinicaudatan crustacean
Opis:
An assemblage of well−preserved spinicaudatan crustaceans (“conchostracans”) is described from lacustrine late Carnian claystone at Krasiejów in southwestern Poland. Their shell microstructure is similar to that in extant spinicaudatans. Five species identified there are assigned to the genera Laxitextella, Menucoestheria (first record in the European Triassic), and Menucoestheria bocki sp. nov. and Krasiestheria parvula gen. et sp. nov. are erected. Specimens of Laxitextella laxitexta are the most abundant, comprising nearly half of the assemblage, those of Menucoestheria bocki one quarter, Laxitextella sp. A, Menucoestheria? sp., and Krasiestheria parvula form a minor component. Their ecological setting was probably similar to Recent relatives: temporary ponds of fresh water. The Late Triassic fauna in the German part of the same basin is closely similar to that in Poland. In Europe, the stratigraphic range of Laxitextella laxitexta is limited to the Middle Keuper (middle–late Carnian).
Źródło:
Acta Palaeontologica Polonica; 2004, 49, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New brachiopods from the Lower-Middle Ordovician [Billingen-Volkhov stages] of the East Baltic
Autorzy:
Egerquist, E
Powiązania:
https://bibliotekanauki.pl/articles/23283.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Clitambonitidae
Lower-Middle Ordovician
brachiopod
Russia
Ordovician
Orthida
Baltic Sea
Brachiopoda
paleontology
Estonia
Opis:
Two new rhynchonelliformean brachiopods, Neumania paucicostata sp. nov. and Leoniorthis robusta gen. et sp. nov., are described from the Billingen and Volkhov stages (Lower–Middle Ordovician: Arenig) of the Baltic–Ladoga Klint area. All specimens were washed out from unconsolidated sediments, and were sampled in Tallin, Estonia, and at three localities in St. Petersburg district, Russia. Numerous specimens were found in a large mud mound, the lower part of which is within the Baltoniodus triangularis conodont Zone, otherwise usually missing in this area. L. robusta is here assigned to the family Orthidae.
Źródło:
Acta Palaeontologica Polonica; 2003, 48, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epibionts on upper Eifelian crinoid columnals from the Holy Cross Mountains, Poland
Autorzy:
Gluchowski, E
Powiązania:
https://bibliotekanauki.pl/articles/23527.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Eifelian
Polska
host species
crinoid
Holy Cross Mountains
crinoid host
Upper Eifelian
paleontology
host selectivity
epibiont
Opis:
Most of 378 upper Eifelian crinoid columnals collected from the lower part of Skały Beds in the Holy Cross Mountains display traces of borings produced by endobionts, but only approximately 20% of them show traces of epibionts. These infested crinoids are represented by 5 stem−based species: Tantalocrinus scutellus, Schyschcatocrinus creber, Gilbertsocrinus vetulus, Pentagonostipes petaloides, and Cycloocetocrinussp. They were fouled by 19 species of suspension−feeding epibionts, including saccamminid foraminiferans, rugose and tabulate corals, cyrtinitid and productid brachiopods, “ctenostome bryozoans”, “cyclostome bryozoans”, cystoporate bryozoans, and rhabdomesid? bryozoans, crinoids, and organisms of uncertain affinities. The majority of these epibionts were opportunistic commensals colonizing living crinoids, and only some utilized dead crinoids as hard substrate for attachment. At least some of these epibionts seem to have settled selectively on particular crinoid host species.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crinoid and ostracod succesion within the Early-Middle Frasnian interval in the Wietrznia quarry, Holy Cross Mountains, Poland
Autorzy:
Gluchowski, E
Casier, J.G.
Olempska, E.
Powiązania:
https://bibliotekanauki.pl/articles/20148.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
crinoid succession
ostracod succesion
Early-Middle Frasnian
Frasnian
Wietrznia quarry
Holy Cross Mountains
Polska
Crinoidea
Ostracoda
Palmatolepis transitans
Palmatolepis punctata
Opis:
Early–Middle Frasnian ostracods and crinoids from Wietrznia in the Northern Kielce subregion of the Holy Cross area were analyzed. Twenty three ostracod species assigned to thirteen named genera, as well as eighteen crinoid species including the representatives of fifteen stem−based taxa were distinguished. For most of the species open nomenclature is applied. The composition of ostracod assemblage changes from moderately diverse in the lower part of the Palmatolepis transitans Zone to poorly diverse in its higher part. Lack of ostracods in the uppermost part of the Pa. transitans Zone and in the Palmatolepis punctata Zone is noted. The crinoid distribution pattern comprises the interval of relatively high diversity, interrupted in the uppermost part of the Pa. transitans Zone, and the interval of temporary recovery in the lower Pa. punctata Zone. Such distribution patterns point to deterioration of environmental conditions across the Early–Middle Frasnian transition, coinciding with a large−scale C−isotopic perturbation superimposed on intermittent, two−step eustatic sea level rise. On the other hand, impoverished, surviving crinoid faunas and absence of ostracods in the Pa. punctata Zone indicate the overall long−term deterioration of life conditions through the major C−isotope anomaly time span. However, this may also result from synsedimentary tectonic pulses, causing block movements and large−scale resedimentation phenomena on the northern slope of the Dyminy Reef during the basal Middle Frasnian sea level rise.
Źródło:
Acta Palaeontologica Polonica; 2006, 51, 4; 695-706
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early-Middle Frasnian cyrtospiriferid brachiopods from the East European Platform
Autorzy:
Sokiran, E V
Powiązania:
https://bibliotekanauki.pl/articles/21097.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Early-Middle Frasnian
Frasnian
cyrtospiriferid brachiopod
brachiopod
East European Platform
paleontology
Russia
Brachiopoda
Cyrtospiriferidae
Opis:
The cyrtospiriferids are among the most important fossils in the Frasnian strata of the East European Platform (EEP). During the Early Frasnian (Palmatolepis falsiovalis Zone) the numerous and morphologically distinct Uchtospiriferinae, accompanied by very scarce Cyrtospiriferinae, are known from South Timan. The mass appearance of cyrtospiriferins on the platform at the beginning of the Middle Frasnian is linked with significant sea−level rise of Devonian Transgression−Regression (T−R) cycle IIc. At that interval these brachiopods attain their highest diversity of the entire Frasnian. The Early Frasnian type species of the genus Uchtospirifer is here revised, and subfamily Uchtospiriferinae re−established. Cyrtospirifer schelonicus, C. rudkinensis, C. mylaensis sp. nov., and C. tenticulum are described from the Middle Frasnian of NW and central regions of EEP and Middle Timan.
Źródło:
Acta Palaeontologica Polonica; 2006, 51, 4; 759-772
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 110

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