[dinosaur] Sharypovoia, new euharamiyidan mammal from Jurassic of Siberia

Ben Creisler
[email protected]


A new paper:


Sharypovoia gen. nov.
S. arimasporum sp. nov.
S. magna sp. nov.
Maiopatagium sibiricum sp. nov.


Alexander O. Averianov, Thomas Martin, Alexey V. Lopatin, Julia A. Schultz,
Rico Schellhorn, Sergei Krasnolutskii,  Pavel Skutschas & Stepan Ivantsov
(2019)
Haramiyidan mammals from the Middle Jurassic of Western Siberia, Russia.
Part 1: Shenshouidae and Maiopatagium
Journal of Vertebrate Paleontology Article: e1669159 (advance online
publication)
doi: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1080_02724634.2019.1669159&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z9StsdyOvBXG5r6SFEKGIN2hflyZbDvPQwUs9PDQ_gU&s=OYtOhFlqqo-GJ-DF0h1DkUgLRjDrJrzlIRGMiGoYfgI&e= 
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tandfonline.com_doi_full_10.1080_02724634.2019.1669159&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z9StsdyOvBXG5r6SFEKGIN2hflyZbDvPQwUs9PDQ_gU&s=DM_Sap-bEOOl-FSdSyvP0jycmNwRZbNa0tjf2YNbsiU&e= 


Three new euharamiyidan taxa are described based on isolated teeth from the
Middle Jurassic (Bathonian) Itat Formation of the Berezovsk coal mine in
Krasnoyarsk Territory, Western Siberia, Russia. The newly erected
Sharypovoia, gen. nov., is referred to the Shenshouidae based on a
premolariform p4, in which the main cusp and basined heel are surrounded by
two rows of cusps. Attributed upper molars have the main labial cusps A1
and A2 connected by a ridge that lacks small additional cusps. In the
smaller species S. arimasporum, sp. nov., there are one to two additional
cusps mesial to cusp A2, whereas the larger S. magna, sp. nov., lacks these
additional cusps. Maiopatagium sibiricum, sp. nov. (Euharamiyida incertae
sedis), is similar to M. furculiferum from the Late Jurassic Yanliao Biota
of northeastern China in having coalesced crest-like lingual cusps and an
open occlusal furrow medially on the upper cheek teeth. Sineleutherus
uyguricus from the Upper Jurassic (Oxfordian) Qigu Formation in Xinjiang,
China, is restricted to the holotype only, a lower molar, and referred to
the Arboroharamiyidae. The previously published sample of ‘Sineleutherus’
issedonicus from the Itat Formation represents a mixture of shenshouid and
arboroharamiyid euharamiyidan taxa, and the holotype of that species, a
lower molar, should be referred to a new genus of Arboroharamiyidae. The
Asiatic euharamiyidan taxa are referable either to Shenshouidae or
Arboroharamiyidae, but not to Eleutherodontidae.

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