| 1. |
- Ahlberg, Per, 1963-, et al.
(författare)
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The Significance of the Devonian Tetrapods of Timan
- 2022
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Ingår i: Paleontological journal. - : PLEIADES PUBLISHING INC. - 0031-0301 .- 1555-6174. ; 56, s. 1029-1031
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Tidskriftsartikel (refereegranskat)abstract
- Brief information on the recently described Parmastega and newly discovered unpublished tetrapod material from the Devonian sequence of Timan is given. The significance of these discoveries is discussed.
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| 2. |
- Lebedev, O. A., et al.
(författare)
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The first find of Permian ceratodontids (Dipnoi, Osteichthyes) in Russia
- 2015
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Ingår i: Paleontological journal. - 0031-0301 .- 1555-6174. ; 49:10, s. 1112-1124
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Tidskriftsartikel (refereegranskat)abstract
- A huge dipnoan, Permoceratodus gentilis Krupina, gen. et sp. nov. (order Ceratodontiformes), from the terminal Permian beds (Zhukovian Regional Stage, Vyatkian Stage, Upper Permian) of the Sokovka locality (Vladimir Region) is described. It is characterized by the evolutionarily advanced high extent of fusion of skull roof bones and conservative well defined structures of the seismosensory system of the head. This combination distinguishes the new taxon from other Ceratodontiformes. A set of conservative and advanced characters is observed in many vertebrates of the Vyazniki faunal assemblage. Large tetrapods and fishes characterize the terminal developmental stage of the Permian fauna of Eastern Europe, which was followed by impoverishment of the taxonomic composition accompanied by a decrease in body size. The dipnoan described here, like some other vertebrates of this assemblage, belong to high-rank taxa, which had just appeared in the Paleozoic, but reached flourishing in the Mesozoic.
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| 3. |
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| 4. |
- Kolar-Jurkovšek, T., et al.
(författare)
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Conodont biostratigraphy of the Early Triassic in eastern Slovenia
- 2017
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Ingår i: Paleontological Journal. - 0031-0301. ; 51:7, s. 687-703
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Tidskriftsartikel (refereegranskat)abstract
- The Early Triassic is a critical interval for the study of recovery from the terminal Permian mass extinction, as there are small-scale extinction events, which may have contributed to the delayed recovery. The systematic measuring and sampling of a 12-m-thick section at the Mokrice locality in eastern Slovenia has resulted in the recovery of a conodont fauna from the Olenekian beds. Four conodont zones have been recognized. These zones are in ascending order as follows: the Hadrodontina aequabilis Zone, Platyvillosus corniger Zone, Platyvillosus regularis Zone, and Triassospathodus hungaricus Zone. These conodont zones confirm the proposed conodont biozonation sequence in western Slovenia and have correlation value especially for the western marginal Tethys. Multielement conodont apparatuses of Triassospathodus hungaricus and Platyvillosus regularis have been reconstructed based on conodont elements that were recently obtained from the Slovenian sections. Although the S2element was not found, the apparatus indicates that the conodont species “Spathognathodus” hungaricus should be assigned to the genus Triassospathodus.
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