Northernmost occurrences of plesiosaurs and turtles in the Upper Cretaceous of Eurasia

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10476015" target="_blank" >RIV/00216208:11310/23:10476015 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_1TvlUTSf_" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_1TvlUTSf_</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cretres.2023.105537" target="_blank" >10.1016/j.cretres.2023.105537</a>

Result language

angličtina

Original language name

Northernmost occurrences of plesiosaurs and turtles in the Upper Cretaceous of Eurasia

Original language description

Here we describe the first findings of reptile remains in the Upper Cretaceous marine strata of Siberia, which represent the northernmost occurrences of plesiosaurians, ?mosasaurids and turtles in the Cretaceous of Eurasia (66-72° N palaeolatitudes). The specimens come from the upper Cenomanian, Turonian and Coniacian of the Pyasina River basin, Santonian and Maastrichtian of the Tanama River and upper Santonian-lower Campanian of the Kheta River. They include remains of polycotylid and elasmosaurid plesiosaurians, as well as indeterminate small and osteologically immature plesiosaurians, indicating a somewhat typical Late Cretaceous plesiosaurian assemblage at the Arctic Polar Circle and implying that these shallow-water regions possibly used by plesiosaurians as a birth and nursery areas during the polar summer. In addition to plesiosaurian remains, a partial carinate ?mosasaurid tooth, and two turtle shell fragments, assigned to either non-marine Macrobaenidae or to marine Chelonioidea, and to non-marine Testudinoidea, are discovered, providing first direct evidence for the presence of these reptile groups in the Late Cretaceous of Northern Siberia. The findings of turtles are the northern most records of this group in the Cenomanian and Coniacian of Eurasia, which parallels previous records from the upper Cenomanian of Arctic Canada, and further supports warm climate conditions during the Cretaceous Greenhouse at high latitudes. Therefore, the Cenomanian-Turonian Boundary Event associated to the climate warming and to the beginning of the Cretaceous thermal maximum is wellrecognized in Northern Siberia showing an expression of this &quot;global&quot; event over the Arctic region.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GC21-30418J" target="_blank" >GC21-30418J: Linking high- and mid-latitude sedimentary archives of the Late Cretaceous greenhouse: correlations between Northern Siberia and Central Europe</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Cretaceous Research

ISSN

0195-6671

e-ISSN

1095-998X

Volume of the periodical

148

Issue of the periodical within the volume

August

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

105537

UT code for WoS article

000976323700001

EID of the result in the Scopus database

2-s2.0-85151527169