Also known as D.218
Where: Yamaguchi, Japan (35.1° N, 131.2° E: paleocoordinates 35.2° N, 131.0° E)
• coordinate stated in text
• small collection-level geographic resolution
When: Calabrian (1.8 - 0.8 Ma)
• AGE: Planktonic foraminifers and nannoplankton show that the age of the Mollusca is Early Pleistocene, estimated at about 1.5 Ma.
• bed-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; lithified, calcareous siliciclastic sediments
Size class: macrofossils
Collection methods: COLLECTOR: Unknown collector, perhaps T. Matsumoto (fisherman). REPOSITORY: Yamaguchi Prefectural Museum.
Primary reference: K. Okamoto and M. Ibaraki. 1988. Early Pleistocene fossil Mollusca from the sea of Japan off Yamaguchi Prefecture. Saito Ho-on Kai Special Publication 1:523-532 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 62297: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Thecostraca | |
"Balanus" sp. Da Costa 1778 barnacle | |
Rhynchonellata | |
Coptothyris grayi Davidson 1852 | |
Bivalvia | |
? Chlamys (Azumapecten) nipponensis, Mizuhopecten tokyoensis, ? Mizuhopecten sp., Mizuhopecten yessoensis, Amussiopecten praesignis
? Mizuhopecten sp. Masuda 1963 scallop
Amussiopecten praesignis Yokoyama 1922 scallop | |
? Miodontiscus sp. Dall 1903 clam | |
? Clinocardium sp. Keen 1936 cockle | |
? Mactra sp. Linnaeus 1767 clam | |
? Venus sp. Linnaeus 1758 venus clam | |
"Anisocorbula venusta" = Corbula (Anisocorbula)
"Anisocorbula venusta" = Corbula (Anisocorbula) clam | |
Lucinoma sp., "Lucinoma cf. annulata" = Lucinoma annulatum
Lucinoma sp. Dall 1901 clam
"Lucinoma cf. annulata" = Lucinoma annulatum Reeve 1850 clam | |
Gastropoda | |
Serpulorbis sp. Sasso 1827 worm shell | |
Turritella sp. Lamarck 1799 turret shell | |
Echinoidea | |
Scaphechinus mirabilis sand dollar |