Kaizawa Valley, upper bed, Iwai, Hinode-mura, Nishitama-gun, Tokyo-to (Triassic of Japan)
Where: Japan (35.8° N, 139.2° E: paleocoordinates 35.8° N, 115.9° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Iwai Formation, Smithian (251.3 - 247.2 Ma)
• 17 m above lower horizon
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, lenticular marl
• Marl lenses
Size class: macrofossils
Primary reference: B. Kummel and S. Sakagami. 1960. Mid-Scythian Ammonites from Iwai Formation, Japan. Breviora 126:1-11 [A. McGowan/A. McGowan/A. McGowan]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 99941: authorized by Matthew Clapham, entered by Matthew Clapham on 27.11.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Cephalopoda | |
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Aspenites sp. Hyatt and Smith 1905 ceratite | |