| First Castorid (Mammalia, Rodentia) from the Middle Miocene of Southeast Asia. | |
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MedLine Citation:
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PMID: 21360164 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Today and in the Tertiary, the geographical distribution of castorids is limited throughout all of the northern continents. Fossils of the Castoridae genus Steneofiber are abundant in many localities of Eurasia from the late Oligocene to Pliocene period. Recently, Steneofiber fossils were discovered in two localities of northern Thailand, Mae Moh and Chiang Muan coal mines, in layers of late middle Miocene age. These discoveries represent the first records of castorids from Southeast Asia and correspond to their southernmost known range. The focus of this study is to describe this new Thai species of Steneofiber and to define its wear stages from the molar occlusal surfaces by using micro-CT scan analysis. The CT scan technique permits the analysis of the virtual occlusal surface changes from wear, allowing easier comparison to related species of Steneofiber cheek teeth without destroying the teeth. The new species, Steneofiber siamensis n. sp., can be distinguished from the other species of Steneofiber by several distinct characters, longer mesostriid on p4, presence of premesostria and metastria on P4, which are smaller than most of the other known species. The occurrence of this new castorid also supports a subtropical to tropical paleoclimate for these two localities of northern Thailand. |
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Authors:
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Kantapon Suraprasit; Yaowalak Chaimanee; Thomas Martin; Jean-Jacques Jaeger |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-1 |
Journal Detail:
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Title: Die Naturwissenschaften Volume: - ISSN: 1432-1904 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0400767 Medline TA: Naturwissenschaften Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Institut International de Paléoprimatologie et Paléontologie Humaine: Evolution et Paléoenvironnements (IPHEP, UMR CNRS 6046), Université de Poitiers, 40 Avenue du Recteur Pineau, 86022, Poitiers Cedex, France, suraprasit@gmail.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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