Thylacocephala (Arthropoda) from the Lower Triassic of the South Kitakami Belt, Northeast Japan

Masayuki Ehiro; Osamu Sasaki; Harumasa Kano; Jun Nemoto; Hisayoshi Kato

doi:10.2517/2015PR010

Thylacocephala (Arthropoda) from the Lower Triassic of the South Kitakami Belt, Northeast Japan

Masayuki Ehiro, Osamu Sasaki, Harumasa Kano, Jun Nemoto, Hisayoshi Kato

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8 Citations (Scopus)

Abstract

A thylacocephalan fauna from the upper Olenekian (Lower Triassic) Osawa Formation in the South Kitakami Belt, Northeast Japan, is described. The fauna comprises three species belonging to three genera: Ankitokazocaris bandoi Ehiro and Kato sp. nov., Kitakamicaris utatsuensis Ehiro and Kato gen. et sp. nov., and Ostenocaris sp. This is the first report of fossils belonging to the class Thylacocephala from Japan, and it expands their paleogeographic distribution. As almost all genera of Thylacocephala inhabited low-latitude areas in each relevant geological time, their occurrence from the Osawa Formation supports previous opinions that the South Kitakami Belt was located in the equatorial region during the Triassic.

Original language	English
Pages (from-to)	269-282
Number of pages	14
Journal	Paleontological Research
Volume	19
Issue number	4
DOIs	https://doi.org/10.2517/2015PR010
Publication status	Published - 2015 Oct 1

Keywords

Arthropoda
Early Triassic
Osawa Formation
South Kitakami Belt
Thylacocephala

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Palaeontology

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Ehiro, M., Sasaki, O., Kano, H., Nemoto, J., & Kato, H. (2015). Thylacocephala (Arthropoda) from the Lower Triassic of the South Kitakami Belt, Northeast Japan. Paleontological Research, 19(4), 269-282. https://doi.org/10.2517/2015PR010

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abstract = "A thylacocephalan fauna from the upper Olenekian (Lower Triassic) Osawa Formation in the South Kitakami Belt, Northeast Japan, is described. The fauna comprises three species belonging to three genera: Ankitokazocaris bandoi Ehiro and Kato sp. nov., Kitakamicaris utatsuensis Ehiro and Kato gen. et sp. nov., and Ostenocaris sp. This is the first report of fossils belonging to the class Thylacocephala from Japan, and it expands their paleogeographic distribution. As almost all genera of Thylacocephala inhabited low-latitude areas in each relevant geological time, their occurrence from the Osawa Formation supports previous opinions that the South Kitakami Belt was located in the equatorial region during the Triassic.",

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AU - Kato, Hisayoshi

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