Comments on the Distinction Between the Miocene Beavers Anchitheriomys Roger, 1898, and Amblycastor Matthew, 1918 (Rodentia, Castoridae)

IF 0.6 4区地球科学 Q4 PALEONTOLOGY

Annals of Carnegie Museum Pub Date : 2017-04-21 DOI:10.2992/007.084.0201

W. Korth

引用次数: 1

Abstract

ABSTRACT The large Miocene beavers (Castoridae) Anchitheriomys Roger, 1898, and Amblycastor Matthew, 1918, have been often considered as synonyms (Flynn and Jacobs 2008). Most recently, they have been distinguished as separate genera based on the morphology of the dentary: Amblycastor restricted to North America and Anchitheriormys limited to Eurasia (Mörs and Hulbert 2010). However, the dentary that was cited as evidence for the separation lacks cheek teeth and its specific identification cannot be verified. In addition, a previously undescribed specimen from the type area of “Amblycastor” fluminis Matthew, 1918, demonstrates that the morphologies used to separate these genera are not consistent with the North American specimens; thus, the two genera are synonymous and the North American species should be referred to Anchitheriomys.

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中新世河狸Anchitheriomys Roger, 1898与Amblycastor Matthew, 1918的区别(啮齿目，河狸科)

中新世大型河狸(Castoridae) Anchitheriomys Roger, 1898和Amblycastor Matthew, 1918经常被认为是同义词(Flynn and Jacobs 2008)。最近，他们被区分为独立的属基于近牙的形态:Amblycastor仅限于北美和Anchitheriormys仅限于欧亚大陆(Mörs和Hulbert 2010)。然而，被引用作为分离证据的牙齿缺乏颊齿，其具体身份无法验证。此外，一个先前未被描述的标本来自“Amblycastor”fluuminis Matthew, 1918年的模式区，表明用于区分这些属的形态学与北美标本不一致;因此，这两个属是同义的，北美的种应该被称为近异属。

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来源期刊

Annals of Carnegie Museum 综合性期刊-动物学

CiteScore

2.50

自引率

18.20%

发文量

审稿时长

>12 weeks

期刊介绍： Annals of Carnegie Museum is a quarterly journal that publishes peer-reviewed short and medium-length original scientific contributions in organismal biology, earth sciences, and anthropology, in 40 by 52.5 pica format (168 by 220 mm or 6-5/8 by 8-5/8 inches). Subject matter must be relevant to Carnegie Museum of Natural History scientific sections or Powdermill Nature Reserve (PNR), preferably with connection to the Carnegie collection and/or personnel. Carnegie Museum staff and research associates receive publication priority, but others are encouraged to submit papers, especially those manuscripts explicitly based on the Carnegie collection.