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1 January 2022 A New Species of Ophiura (Echinodermata, Ophiuroidea) from Miocene Deep-Sea Deposits in the Pohang Basin, Korea
Yoshiaki Ishida, Ben Thuy, Gi-Soo Nam, Alexander Martynov, Toshihiko Fujita, Jong-Heon Kim
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Abstract

Dense aggregations of articulated ophiuroids, in external mould preservation, were discovered in the middle Miocene Duho Formation (Yeonil Group) of Pohang City, near the southeast coast of Korea. These specimens are here described as a new species, Ophiura pohangensis, which differs from congeners in having long, slender oral papillae, and tiny quadrangular arm comb papillae. The new species constitutes the first well-identified example of the class Ophiuroidea in the fossil record of Korea. Aggregation density of the new species is similar to that of occurrences of both fossil and extant Ophiura sarsii sarsii across Japan.

© by the Palaeontological Society of Japan
Yoshiaki Ishida, Ben Thuy, Gi-Soo Nam, Alexander Martynov, Toshihiko Fujita, and Jong-Heon Kim "A New Species of Ophiura (Echinodermata, Ophiuroidea) from Miocene Deep-Sea Deposits in the Pohang Basin, Korea," Paleontological Research 26(1), 18-30, (1 January 2022). https://doi.org/10.2517/PR200002
Received: 23 January 2020; Accepted: 19 September 2020; Published: 1 January 2022
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KEYWORDS
Dense aggregations
Duho Formation
Neogene
Ophiuridae
paleoenvironment
taxonomy
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