Translator Disclaimer
1 October 2014 An Early Triassic Ichthyopterygian Fossil from the Osawa Formation in Minamisanriku Town, Miyagi Prefecture, Japan
Yui Takahashi, Yasuhisa Nakajima, Tamaki Sato
Author Affiliations +
Abstract

The ichthyopterygian Utatsusaurus hataii Shikama et al. 1978 is the only valid reptilian taxon known from the Lower Triassic Osawa Formation in Minamisanriku Town, Miyagi Prefecture, which records the recovery of the marine ecosystem shortly after the end-Permian mass extinction. In this paper, we describe a fragmentary specimen of an indeterminate ichthyopterygian which is distinguished from Utatsusaurus hataii based on rib morphology. The discovery of a previously unknown ichthyopterygian implies that the taxonomic diversity of the reptilian fauna of this formation is higher than previously assumed.

© by the Palaeontological Society of Japan
Yui Takahashi, Yasuhisa Nakajima, and Tamaki Sato "An Early Triassic Ichthyopterygian Fossil from the Osawa Formation in Minamisanriku Town, Miyagi Prefecture, Japan," Paleontological Research 18(4), 258-262, (1 October 2014). https://doi.org/10.2517/2014PR023
Received: 4 September 2013; Accepted: 1 April 2014; Published: 1 October 2014
JOURNAL ARTICLE
5 PAGES


Share
SHARE
KEYWORDS
Early Triassic
Ichthyopterygia
marine reptile
Osawa Formation
Utatsusaurus
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top