First multituberculate mammals from the Lower Cretaceous of Germany

被引：8
作者：
Martin, Thomas [1 ]
Averianov, Alexander O. [2 ]
Schultz, Julia A. [1 ]
Schwermann, Achim H. [3 ]
机构：
[1] Rhein Friedrich Wilhelms Univ Bonn, Inst Geosci, Sect Palaeontol, Nussallee 8, D-53115 Bonn, Germany
[2] Russian Acad Sci, Zool Inst, Univ Skaya Emb 1, St Petersburg 199034, Russia
[3] Westphalian State Museum & Planetarium, LWL Museum Nat Hist, Sentruper Str 285, D-48161 Munster, Germany
来源：
CRETACEOUS RESEARCH | 2021年 / 119卷
基金：
俄罗斯科学基金会;
关键词：
Mammalia; Multituberculata; Lower Cretaceous; Germany; PURBECK LIMESTONE FORMATION; FUXIN FORMATIONS; SAUERLAND; SHAHAI; TEETH;
D O I：
10.1016/j.cretres.2020.104699
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Multituberculata from the Lower Cretaceous (Barremian-Aptian) Balve locality in Germany are represented by two taxa, the pinheirodontid Bructerodon alatus gen. et sp. nov. and the eobaatarid Cheruscodon balvensis gen. et sp. nov. Bructerodon alatus gen. et sp. nov. is known from an upper premolar (P5) and an upper molar (M1) with a distinct distolingual wing showing three cusps. Cheruscodon balvensis gen. et sp. nov. is represented by a dentary fragment with p4 and isolated teeth (P1, p4, m2). The new taxon is similar to other eobaatarids by its small single-rooted p2, double-routed p3, p4 with a single distolabial cusp, and mesio-distally asymmetric lower molars. It differs from most other eobaatarids by a larger number of serrations (11) and a larger distolabial cusp on p4. Cheruscodon gen. nov. is similar to Arginbaatar from the Lower Cretaceous of Mongolia in having the roots of p4 exposed above the alveolar border and a mesially curved distal root of p4. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：14
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