Jianli XIONG,Xiuying LIU and Xiaomao ZENG.Discovery of an Internasal Bone in Hynobius maoershanensis (Urodela: Hynobiidae)[J].Asian Herpetological Research(AHR),2011,2(2):87-90.[doi:10.3724/SP.J.1245.2011.00087]
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Discovery of an Internasal Bone in Hynobius maoershanensis (Urodela: Hynobiidae)
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

Issue:
2011 VoI.2 No.2
Page:
87-90
Research Field:
Original Article
Publishing date:
2011-06-15

Info

Title:
Discovery of an Internasal Bone in Hynobius maoershanensis (Urodela: Hynobiidae)
Author(s):
Jianli XIONG1;  Xiuying LIU2 and Xiaomao ZENG 3 *
1 Animal Science and Technology College, Henan University of Science and Technology, Luoyang 471003, Henan, China
2 School of Agriculture, Henan University of Science and Technology, Luoyang 471003, Henan, China
3 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
Keywords:
salamander;  internasal bone;  skull;  anatomy;  individual variation
PACS:
-
DOI:
10.3724/SP.J.1245.2011.00087
Abstract:
Internasal bones have generally been recorded in teleostean and tetrapod fossils, being absent in most extant vertebrates. Presently, there has been one case of the internasal bone discovered in a living salamander, Pseudohynobius puxiongensis (Caudata: Hynobiidae). The second case discovered in living salamanders is reported in this article, which is present in one of five specimens of Hynobius maoershanensis, a species endemic to China. This case is again regarded as individual variation. Thus, the presence of an “internasal bone” may represent intraspecific variation and is thus a misleading taxonomic character.

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