Where: Japan (38.7° N, 141.5° E: paleocoordinates 38.5° N, 118.7° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Columbites parisianus ammonoid zone, Osawa Formation, Spathian (251.3 - 247.2 Ma)
• Middle part of Osawa Fm
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified siliciclastic sediments
Size class: macrofossils
Preservation: mold/impression
Primary reference: M. Murata. 1973. Triassic fossils from the Kitakami Massif, northeast Japan, Part 1, Pelecypods and Brachiopods of the Osawa and the Fukkoshi Formations. Science Reports of the Tohoku University. Second Series, Geology. Special Volume (Hatai Memorial Volume) 6:267-275 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 113889: authorized by Matthew Clapham, entered by Matthew Clapham on 06.08.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
? Leptochondria hataii Murata 1973 scallop | |
Lingulata | |
Lingularia sp. Biernat and Emig 1993 | |
Orbiculoidea sp. d'Orbigny 1847
Orbiculoidea cf. sibirica Moisseiev 1947 |