New large leptictid insectivore from the Late Paleogene of South Dakota, USA

• Autorzy: Meehan T.J. , Martin L. D.
• Języki publikacji: EN

Abstrakty

EN

From a skull and mandible, we describe a new genus and species of a primitive insectivore (Mammalia: Insectivora: Leptictida: Leptictidae). Its large body size and higher−crowned teeth indicate a different feeding ecology from other leptictid insectivores. With evidence of some heavy, flat wear on the molariform teeth, its shift in diet was likely to greater herbivory. Unlike the narrow snout of Blacktops, this new leptictid retains a broad snout, suggesting that small vertebrates were still important dietary components. The specimen was collected from the floodplain deposits of the lower or middle White River Group of South Dakota, which represent the latest Eocene to earliest Oligocene (Chadronian and Orellan North American Land Mammal “Ages”).

Słowa kluczowe

EN

paleontology; new genus; new species; large leptictid insectivore; insectivore; Insectivora; Late Paleogene; South Dakota; USA; Mammalia; Leptictidae; Leptictis; Megaleptictis; Eocene; Oligocene; White River Group; skull; mandible; systematics

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2012
• Tom: 57
• Numer: 3
• Opis fizyczny: p.509-518,fig.,ref.

Twórcy

autor

Meehan T.J.

• Research Associate, Section of Vertebrate Paleontology, Carnegie Museum of Natural History, 4400 Forbes Avenue, Pittsburgh, PA 15213, USA

autor

Martin L. D.

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