A New Deep-Sea Shark Scymnodalatias Kazenobon (Squaliformes, Somniosidae) from the Miocene Yatsuo Group in Central Japan

Kouki Nishimatsu; Atsushi Ujihara

doi:10.2517/2018PR006

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Kouki Nishimatsu,^1,* Atsushi Ujihara¹

¹Graduate School of Environmental Studies, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan

^*Author contributionsKouki Nishimatsu initiated the study and was primarily responsible for the taxonomic aspects. Atsushi Ujihara carried out the geological survey and its interpretation. All authors contributed to the writing of the paper.

Abstract

A new deep-sea shark of the genus Scymnodalatias (Squaliformes, Somniosidae), S. kazenobon sp. nov., is described from the middle Miocene Yatsuo Group in Central Japan. This is the first fossil record of the genus Scymnodalatias from the Miocene strata and its first occurrence in the Pacific region. This discovery seems to indicate that major distributional changes occurred in the Pacific region sometime during the late Cenozoic era.

Citation Download Citation

Kouki Nishimatsu and Atsushi Ujihara "A New Deep-Sea Shark Scymnodalatias kazenobon (Squaliformes, Somniosidae) from the Miocene Yatsuo Group in Central Japan," Paleontological Research 23(1), 23-28, (3 January 2019). https://doi.org/10.2517/2018PR006

Received: 25 June 2016; Accepted: 25 April 2018; Published: 3 January 2019

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