Fossil Lateral Arm Plates of Stegophiura sladeni (Echinodermata: Ophiuroidea: Ophiurida) from the Middle Pleistocene of Japan

Masanori Okanishi; Shota Mitsui; Ben Thuy

doi:10.2517/PR200039

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Masanori Okanishi,¹ Shota Mitsui,^2,* Ben Thuy³

¹Misaki Marine Biological Station, The University of Tokyo, 1024 Koajiro, Miura, Kanagawa 238-0225, Japan (e-mail: )
²Graduate school of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo 108-8477, Japan
³Department of palaeontology, Natural history museum Luxembourg, 24 Rue Münster, 2160, Luxembourg

^*Marine Biological Research Institute of Japan Co., Ltd, 4-3-16 Shinagawa, Tokyo 142-0042, Japan (present address)

Abstract

Disarticulated fossil lateral arm plates of brittle stars from the Middle Pleistocene Miyata Formation, Miura, Kanagawa Prefecture, eastern Japan, are described. They are assigned to Stegophiura sladeni on the basis of their microstructural morphology. This is the first description based on disarticulated fossil lateral arm plates of brittle stars from Japan and should encourage further exploration of the Japanese ophiuroid microfossil record.

Citation Download Citation

Masanori Okanishi, Shota Mitsui, and Ben Thuy "Fossil Lateral Arm Plates of Stegophiura sladeni (Echinodermata: Ophiuroidea: Ophiurida) from the Middle Pleistocene of Japan," Paleontological Research 26(2), 131-136, (1 April 2022). https://doi.org/10.2517/PR200039

Received: 21 September 2020; Accepted: 24 November 2020; Published: 1 April 2022

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