921. A NEW OCCURRENCE OF IMAGOTARIINE PINNIPED FROM THE MIDDLE MIOCENE GOUDO FORMATION IN HIGASHIMATSUYAMA CITY, SAITAMA, JAPAN
Bibliographic Information
- Other Title
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- A New Occurrence of Imagotariine Pinniped from the Middle Miocene Goudo Formation in Higashimatsuyama City,Saitama,Japan
- New Occurrence of Imagotariine Pinniped
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Description
A pinniped tooth referable to the subfamily Imagotariinae Mitchell, 1968, is described from the earliest Middle Miocene Goudo Formation near Higashimatsuyama City, Saitama Prefecture. The tooth has an enlarged lingual cingulum, typical for the Late Miocene imagotariine Imagotaria downsi Mitchell, 1968, but an enlarged lingual cingulum with a large posterolingual protocone shelf on its crown seems also to be diagnostic for all the genera within that subfamily. Therefore, it has been identified herein only as a left upper second or third premolar of an indeterminate genus and species of the subfamily Imagotariinae. This record provides additional information about the paleobiogeographic and geochronologic distribution of imagotariine pinnipeds of the circum-North Pacific.
Journal
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- Transactions and proceedings of the Paleontological Society of Japan. New series
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Transactions and proceedings of the Paleontological Society of Japan. New series 1991 (162), 801-805, 1991
PALAEONTOLOGICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282680410419072
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- NII Article ID
- 110002703318
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- NII Book ID
- AA00867896
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- ISSN
- 21860963
- 00310204
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- NDL BIB ID
- 3728219
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL Search
- CiNii Articles
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- Abstract License Flag
- Disallowed