Fossil Gorgonocephalid Basket Stars (Echinodermata: Ophiuroidea: Euryalida) from the Middle Pleistocene of Japan; the First Record from the Indo-Pacific Region

Masanori Okanishi; Yoshiaki Ishida; Shota Mitsui

doi:10.2517/2018PR017

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Masanori Okanishi,¹ Yoshiaki Ishida,² Shota Mitsui³

¹Misaki Marine Biological Station, The University of Tokyo, 1024 Koajiro, Miura, Kanagawa 238-0225, Japan (e-mail: mokanishi@tezurumozuru.com)
²2-20-13 Kamiogi, Suginami-ku, Tokyo 167-0043, Japan
³Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan

Abstract

Disarticulated fossil euryalid ophiuroid vertebrae from the Middle Pleistocene Miyata Formation, Miura, Kanagawa Prefecture, eastern Japan, are described. The vertebrae are assigned to the family Gorgonocephalidae on the basis of arm branching and the presence of an open oral groove along the entire arm. This is the first record of fossil euryalids from the Indo-Pacific region.

Citation Download Citation

Masanori Okanishi, Yoshiaki Ishida, and Shota Mitsui "Fossil Gorgonocephalid Basket Stars (Echinodermata: Ophiuroidea: Euryalida) from the Middle Pleistocene of Japan; the First Record from the Indo-Pacific Region," Paleontological Research 23(3), 179-185, (2 July 2019). https://doi.org/10.2517/2018PR017

Received: 7 June 2018; Accepted: 13 August 2018; Published: 2 July 2019

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