Sakawa Area, Kochigatani Group, Shikoku (Triassic of Japan)

Where: Kochi, Japan (33.5° N, 133.3° E: paleocoordinates 42.2° N, 117.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Kochigatani Group, Carnian (237.0 - 228.0 Ma)

• Lower part of Kochigatani Group

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: I. Hayami. 1975. A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin (10) [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40471: authorized by Martin Aberhan, entered by Sabine Nürnberg on 24.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida - Rhynchonellidae
"Neoschizodus (Neoschizodus) nakajimensis" = Rhynchonella nakajimensis
"Neoschizodus (Neoschizodus) nakajimensis" = Rhynchonella nakajimensis Ichikawa 1949
Bivalvia
 Nuculanida - Malletiidae
 Nuculida - Nuculidae
Trigonucula sakawana Ichikawa 1949 nut clam
? Nucula iwayai nut clam
 Mytilida - Mytilidae
Falcimytilus nasai Kobayashi and Ichikawa 1950 mussel
 Ostreida - Cassianellidae
 Ostreida - Halobiidae
 Pectinida - Limidae
Pseudolimea naumanni Kobayashi and Ichikawa 1951 file clam
 Pectinida - Oxytomidae
 Pectinida - Aviculopectinidae
 Pectinida - Pectinoidae
Chlamys mojsisovicsi Kobayashi and Ichikawa 1949 scallop
Tosapecten suzukii Kobayashi 1931 scallop
subsp. suzukii
 Arcida - Parallelodontidae
 Solenida - Pharidae
 Cardiida - Kalenteridae
 Cardiida - Tancrediidae
Sakawanella triadica Ichikawa 1950 clam
 Cardiida - Anthracosiidae
 Modiomorphida - Palaeopharidae
 Pholadida - Pleuromyidae
Pleuromya forsbergi clam
subsp. nipponica
 Lucinida - Lucinidae
Schafhaeutlia mellingi Hauer 1857 clam
subsp. japonica
 Trigoniida - Trigoniidae
 Trigoniida - Myophoriidae