Also known as NSM-PCL11-73-3; Loc. 5 in Matsumoto and Morozumi 1980
Where: Japan (34.3° N, 135.3° E: paleocoordinates 42.6° N, 124.3° E)
• outcrop-level geographic resolution
When: Nostoceras hetonaiense zone, Azenotani Mudstone Member (Mutsuo Formation), Early/Lower Maastrichtian (70.6 - 66.0 Ma)
• member-level stratigraphic resolution
Environment/lithology: marine; sandy siltstone
Primary reference: T. Kase. 1990. Late Cretaceous gastropods from the Izumi Group of southwest Japan. Journal of Paleontology 64(4):563-578 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 4892: authorized by John Alroy, entered by John Alroy on 29.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Atira tricarinata snail |