Kami-Atsunai, Hokkaido (Oligocene of Japan)

Where: Japan (42.8° N, 143.8° E: paleocoordinates 44.6° N, 141.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Nuibetsu Formation, Rupelian (33.9 - 28.1 Ma)

Environment/lithology: deep subtidal; carbonate

Size class: macrofossils

Primary reference: K. Hryniewicz, K. Amano, R. G. Jenkins and S. Kiel. 2017. Thyasirid bivalves from Cretaceous and Paleogene cold seeps. Acta Palaeontologica Polonica 62(4):705-728 [W. Kiessling/M. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191320: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 23.01.2018, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Mytilida - Mytilidae
Bathymodiolus inouei Amano and Jenkins 2011 mussel
 Carditida - Carditidae
Cyclocardia sp.2 Conrad 1867 clam
 Cardiida - Vesicomyidae
Hubertschenckia ezoensis Yokoyama 1890 clam
 Lucinida - Thyasiridae
"Conchocele bisecta" = Conchocele conradii2, Conchocele taylori
"Conchocele bisecta" = Conchocele conradii2 Rosenkrantz 1942 clam
Conchocele taylori Hickman 2015 clam
 Protobranchia - Solemyidae
Acharax sp.2 Dall 1908 Awning Clam
Gastropoda
 Neogastropoda - Buccinidae
Trominina japonica2 Takeda 1953 true whelk
Colus sp.2 Röding 1798 true whelk
 Prosobranchia - Provannidae
Provanna urahoroensis n. sp.1 Amano and Jenkins 2013 snail
 Naticoidea - Naticidae
Euspira meisensis2 Makiyama 1926 moon snail