Where: Japan (39.9° N, 141.9° E: paleocoordinates 53.1° N, 140.9° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Tanohata Formation, Late/Upper Aptian (122.5 - 113.0 Ma)
• STRATIGRAPHIC RELATIONS: From the Tanohata Fm. AGE: Late Aptian; justification for age not reported in text. STRATIGRAPHIC POSITION: From the basal part of the Tanohata Fm.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, medium-grained, conglomeratic sandstone
Size class: macrofossils
Collected by Hanai
• COLLECTOR: T. Hanai. REPOSITORY: Not stated in text.
Primary reference: T. Kase. 1984. Early Cretaceous marine and brackish-water Gastropoda from Japan 1-262 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 91300: authorized by Austin Hendy, entered by Austin Hendy on 14.09.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Conotomaria cf. lima snail | |
Shikamacirrus nipponicus n. gen. n. sp.
Shikamacirrus nipponicus n. gen. n. sp. snail | |
Discotectus cripsis top snail | |
Trochopsidea japonica n. sp.
Trochopsidea japonica n. sp. snail |