A high-latitude fauna of mid-Mesozoic mammals from Yakutia, Russia.

Autor: Averianov A; Zoological Institute of the Russian Academy of Sciences, Saint Petersburg, Russia.; Institute of Earth Sciences, Saint Petersburg State University, Saint Petersburg, Russia.; Institute of Geology and Petroleum Technology, Kazan Federal University, Kazan, Russia., Martin T; Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Universität Bonn, Bonn, Germany., Lopatin A; Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow, Russia., Skutschas P; Vertebrate Zoology Department, Saint Petersburg State University, Saint Petersburg, Russia., Schellhorn R; Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Universität Bonn, Bonn, Germany., Kolosov P; Institute of Diamond and Precious Metals Geology, Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russia., Vitenko D; Vertebrate Zoology Department, Saint Petersburg State University, Saint Petersburg, Russia.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2018 Jul 25; Vol. 13 (7), pp. e0199983. Date of Electronic Publication: 2018 Jul 25 (Print Publication: 2018).
DOI: 10.1371/journal.pone.0199983
Abstrakt: The Early Cretaceous (?Berriasian-Barremian) Teete vertebrate locality in Western Yakutia, East Siberia, Russia, has produced mammal remains that are attributed to three taxa: Eleutherodontidae indet. cf. Sineleutherus sp. (Haramiyida; an upper molariform tooth), Khorotherium yakutensis gen. et sp. nov. (Tegotheriidae, Docodonta; maxillary fragment with three molariform teeth and dentary fragment with one molariform tooth), and Sangarotherium aquilonium gen. et sp. nov. (Eutriconodonta incertae sedis; dentary fragment with one erupted molariform tooth and one tooth in crypt). This is the second occurrence of Mesozoic mammals in high latitudes (paleolatitude estimate N 63-70°) of the Northern Hemisphere. In spite of the presumed Early Cretaceous age based on freshwater mollusks, the Teete mammal assemblage has a distinctive Jurassic appearance, being most similar to the Middle-Late Jurassic mammal assemblages known from Siberia, Russia and Xinjiang, China. The smooth transition from Jurassic to Cretaceous biota in Northern Asia is best explained by stable environmental conditions.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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