Where: Japan (34.3° N, 134.8° E: paleocoordinates 42.9° N, 123.8° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Pachydiscus awajiensis ammonoid zone, Seidan Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, fine-grained, sandy siltstone
Size class: macrofossils
Preservation: mold/impression
Collected by K. Ichimichi, M. Kuwano, K. Sakakibara, M. Takada
• Repository: Osaka Museum of Natural History
Primary reference: Y. Morozumi. 1985. Late Cretaceous (Campanian and Maastrichtian) ammonites from Awaji Island, southwest Japan. Bulletin of the Osaka Museum of Natural History 39:1-58 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 176805: authorized by Matthew Clapham, entered by Matthew Clapham on 03.03.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
"Anisomyon problematicus" = Gigantocapulus problematicus
"Anisomyon problematicus" = Gigantocapulus problematicus Nagao and Otatume 1938 snail | |
Cephalopoda | |
"Hypophylloceras (Neophylloceras) aff. mikobokense" = Hypophylloceras (Neophylloceras) surya
"Hypophylloceras (Neophylloceras) aff. mikobokense" = Hypophylloceras (Neophylloceras) surya Forbes 1846 ammonite | |
Pachydiscus (Pachydiscus) awajiensis n. sp. Morozumi 1985 ammonite | |
Baculites inornatus Meek 1862 ammonite |