Where: Japan (35.4° N, 137.0° E: paleocoordinates 47.4° N, 147.1° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Parahsuum simplum assemblage-zone zone, Hettangian to Hettangian (201.3 - 182.7 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified chert and lithified mudstone
Size class: microfossils
Preservation: original silica
Collection methods: chemical, hydroflouric
Primary reference: R. Hori. 1990. Lower Jurassic Radiolarian Zones of SW Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 159:562-586 [J. Pálfy/A. Kocsis]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 120189: authorized by József Pálfy, entered by Adam Kocsis on 08.11.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
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Trillus elkhornensis Pessagno and Blome 1980 radiolarian | |
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Parahsuum ovale Hori and Yao 1988 radiolarian
Parahsuum simplum Yao 1982 radiolarian | |
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"Katroma kurusuensis" = Katroma clara Yeh 1987 radiolarian | |
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Napora spp. Pessagno 1977 radiolarian
Bipedis yaoi Gorican et al. 2006 radiolarian originally mentioned as Bipedis sp. B; valid name from Gorican et al. 2006
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