Where: Japan (35.4° N, 136.9° E: paleocoordinates 45.0° N, 144.6° E)
• coordinate estimated from map
• hand sample-level geographic resolution
When: Hexasaturnalis hexagonus assemblage zone other zone, Middle Toarcian (182.0 - 175.6 Ma)
• 127 cm above base of white massive chert bed; post black chert (OAE) level. (by Gorican et al., 2006)
•
Environment/lithology: basinal (siliceous); lithified, gray, green 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 124797: authorized by József Pálfy, entered by Adam Kocsis on 24.02.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
| Protozoa | |
|
Hexasaturnalis hexagonus Yao 1972 radiolarian | |
Hsuum "sp. X", ? Hsuum "sp. Y", Hsuum busuangaense, Hsuum exiguum, ? Parahsuum "sp. B", Parahsuum longiconicum
Hsuum "sp. X" Pessagno 1977 radiolarian
? Hsuum "sp. Y" Pessagno 1977 radiolarian
Hsuum busuangaense radiolarian
Hsuum exiguum radiolarian
? Parahsuum "sp. B" Yao 1982 radiolarian
Parahsuum longiconicum Sashida 1988 radiolarian | |
|
Praeparvicingula spp. Pessagno et al. 1993 radiolarian | |