Aw7, Nagata (Cretaceous of Japan)

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
 Vanikoroidea - Gigantocapulidae
"Anisomyon problematicus" = Gigantocapulus problematicus
"Anisomyon problematicus" = Gigantocapulus problematicus Nagao and Otatume 1938 snail
Cephalopoda
 Phylloceratida - Phylloceratidae
"Hypophylloceras (Neophylloceras) aff. mikobokense" = Hypophylloceras (Neophylloceras) surya
"Hypophylloceras (Neophylloceras) aff. mikobokense" = Hypophylloceras (Neophylloceras) surya Forbes 1846 ammonite
 Ammonitida - Pachydiscidae
Pachydiscus (Pachydiscus) awajiensis n. sp. Morozumi 1985 ammonite
 Ammonitida - Baculitidae
Baculites inornatus Meek 1862 ammonite