怀俄明南部大多采石场晚古新世的雪齿兽科(哺乳纲,真齿兽科)及雪齿兽亚科的修正

IF 0.6 4区 地球科学 Q4 PALEONTOLOGY Annals of Carnegie Museum Pub Date : 2023-09-30 DOI:10.2992/007.088.0202
Matthew F. Jones, K. Christopher Beard
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引用次数: 0

摘要

食虫兽是一种来自亚洲、北美和欧洲的食虫哺乳动物。人们主要是从它们相对不特化的摩擦齿系而知道的,目前被归为Nyctitheriidae科的各种分类群,以前被认为属于不同的已灭绝的真兽科,如Leptictidae和Adapisoriculidae,有些甚至被认为是早期的蝙蝠。在这里,我们描述了来自美国怀俄明州斯威特沃特县大多采石场晚古新世(克拉克福克纪早期)的大量夜蛾,代表了目前已知的最多样化的夜蛾动物组合。Big Multi Quarry在目前已知的Clarkforkian遗址中是独一无二的,因为它保存了大量的微型脊椎动物,包括数百个属于真脊椎动物、原始动物、元脊椎动物和多结核动物的标本。大型多元动物群包括至少8种月牙虫,并保存了已知最早出现的Ceutholestes Rose和Gingerich属(1987)和Plagioctenoides Bown属(1979),以及属于Limaconyssus habrus Gingerich(1987)和Wyonycteris chalix Gingerich(1987)的其他标本。本区系夜蛾属新种包括:刺蛾新种;隐花拟隐花,新种;斜齿鲨,新种;和斜齿鲨,新种。这个大样本的吸血虫增强了我们对几个鲜为人知的分类群的解剖学知识,包括那些包括胎盘亚科的分类群,为此我们提供了一个修订的诊断。
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Nyctitheriidae (Mammalia, ?Eulipotyphla) from the Late Paleocene of Big Multi Quarry, Southern Wyoming, and a Revision of the Subfamily Placentidentinae
Nyctitheres are a diverse Paleogene group of insectivorous mammals from Asia, North America, and Europe. Known mostly from their relatively unspecialized tribosphenic dentitions, various taxa currently placed in the family Nyctitheriidae have previously been considered to belong to such disparate extinct eutherian families as Leptictidae and Adapisoriculidae, and some have even been considered to be early bats. Here we describe a large collection of nyctitheres from the late Paleocene (early Clarkforkian) of Big Multi Quarry in Sweetwater County, Wyoming, USA, representing the most diverse faunal assemblage of nyctitheres currently known. Big Multi Quarry is unique among currently known Clarkforkian sites because of its excellent preservation of microvertebrates, including hundreds of specimens belonging to Eulipotyphla, Primatomorpha, Metatheria, and Multituberculata. The Big Multi fauna includes at least eight species of nyctitheres and preserves the earliest known occurrences of the genera Ceutholestes Rose and Gingerich, 1987, and Plagioctenoides Bown, 1979, as well as additional specimens belonging to the species Limaconyssus habrus Gingerich, 1987, and Wyonycteris chalix Gingerich, 1987. New species of nyctitheres from this fauna include: Ceutholestes acerbus, new species; Plagioctenoides cryptos, new species; Plagioctenodon dawsonae, new species; and Plagioctenodon goliath, new species. This large sample of nyctitheres enhances our knowledge of the anatomy of several poorly known taxa including those comprising the subfamily Placentidentinae, for which we provide an emended diagnosis.
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来源期刊
Annals of Carnegie Museum
Annals of Carnegie Museum 综合性期刊-动物学
CiteScore
2.50
自引率
18.20%
发文量
4
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.
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