Where: Japan (38.7° N, 141.3° E: paleocoordinates 30.3° N, 117.0° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Toyoma Formation, Wuchiapingian (259.9 - 254.2 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified mudstone
Size class: macrofossils
Preservation: cast, mold/impression
Collected by K. Nakazawa
Primary reference: K. Nakazawa and N.D. Newell. 1968. Permian bivalves of Japan. Memoirs of the Faculty of Science, Kyoto University, Series of Geology and Mineralogy 35(1):1-108 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 114535: authorized by Matthew Clapham, entered by Matthew Clapham on 16.08.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
Pseudopermophorus uedai n. sp.
Pseudopermophorus uedai n. sp. Nakazawa and Newell 1968 clam | |
Astartella toyomensis n. sp.
Astartella toyomensis n. sp. Nakazawa and Newell 1968 clam | |
|
Myalina sp. de Koninck 1842 clam | |
|
Aviculopecten "sp. b" M'Coy 1851 scallop | |