Where: Japan (35.4° N, 137.0° E: paleocoordinates 45.0° N, 144.6° E)
• coordinate stated in text
• small collection-level geographic resolution
When: Hexasaturnalis hexagonus assemblage-zone zone, Middle Toarcian to Middle Toarcian (182.0 - 175.6 Ma)
• 97 cm above base of thick green shale bed.
•
•The standard level of this section is located at the base of a thick green shale bed just below IYII 14 (6m below the top of the IY section).
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified chert
Size class: microfossils
Primary reference: M. Takeuchi. 2001. Morphologic study of multicyrtid Nassellaria (Radiolaria) from the Lower Jurassic bedded cherts in the Inuyama Area, Mino Terrane, Central Japan. News of Osaka Micropaleontologists, Special Volume 12:181-189 [J. Pálfy/A. Kocsis]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 124807: authorized by József Pálfy, entered by Adam Kocsis on 24.02.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
? Parahsuum "sp. B", Parahsuum ovale, Hsuum "sp. X", ? Hsuum "sp. Y", Hsuum busuangaense, Hsuum exiguum
? Parahsuum "sp. B" Yao 1982 radiolarian
Parahsuum ovale Hori and Yao 1988 radiolarian
Hsuum "sp. X" Pessagno 1977 radiolarian
? Hsuum "sp. Y" Pessagno 1977 radiolarian
Hsuum busuangaense radiolarian
Hsuum exiguum radiolarian | |
Praeparvicingula spp. Pessagno et al. 1993 radiolarian
Praeparvicingula gigantocornis Kishida and Hisada 1985 radiolarian
Praeparvicingula nanoconica Hori and Otsuka 1989 radiolarian |