Where: Japan (40.0° N, 142.3° E: paleocoordinates 54.9° N, 134.5° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Mikasa Formation, Cenomanian (100.5 - 93.9 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; gray, calcareous sandstone
Size class: macrofossils
Collection methods: bulk
Primary reference: I. Hayami and T. Kase. 1981. Cenomanian molluscs in a sandstone block from the sea bottom off the southern coast of Kuji, northeast Japan. Transactions and Proceedings of the Palaeontological Society of Japan, NS 121:29-50 [M. Aberhan/T. Schossleitner/T. Schossleitner]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 141571: authorized by Martin Aberhan, entered by Thomas Schossleitner on 29.03.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Thetis japonica Hayami 1975 clam | |
|
Goniomya (Goniomya) sp. Agassiz 1842 clam | |
|
Cymbophora sp. Gabb 1869 clam | |
|
Goshoraia crenulata venus clam | |
Pterotrigonia sp., Pterotrigonia (Acanthotrigonia) cf. longiloba, Pterotrigonia (Pterotrigonia) brevicula
Pterotrigonia sp. van Hoepen 1929 clam | |
|
Inoceramus (Birostrina) cf. concentricus Parkinson 1819 clam Inoceramus (Birostrina) cf. concentricus nipponicus
| |
|
Entolium cf. obovatum scallop | |
| Gastropoda | |
Drepanochilus minimus n. sp.
Drepanochilus minimus n. sp. snail | |
|
Avellana sp. d'Orbigny 1842 snail | |
|
Margarites ? funiculatus snail | |