Hirotomi, eurythermal molluscs (Miocene of Japan)

Where: Hokkaido, Japan (42.5° N, 142.2° E: paleocoordinates 43.1° N, 140.6° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Furanui Formation, Langhian (16.0 - 13.8 Ma)

• early Middle Miocene

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: R. Uchimura and R. Majima. 1992. The mixed sea area of warm- and cold-water molluscs of the Japanese early Middle Miocene - The case study in the Furanui Formation, mid-Hokkaido, Japan. Journal of the Geological Society of Japan 98(12):1129-1144 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 77920: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Sorbeoconcha - Naticidae
Glossaulax didyma Röding 1798 moon snail
subsp. coticazae
 Neotaenioglossa - Calyptraeidae
Crepidula jimboana slipper shell
Bivalvia
 Arcida - Glycymerididae
Glycymeris cisshuensis Makiyama 1926 clam
 Pectinida - Pectinoidae
"Patinopecten kimurai" = Mizuhopecten kimurai, Patinopecten kobiyamai
"Patinopecten kimurai" = Mizuhopecten kimurai Yokoyama 1925 scallop
 Solenida - Pharidae
Cultellus izumoensis Yokoyama 1923 clam
 Hiatellida - Hiatellidae
 Pholadida - Myidae
Mya cuneiformis Böhm 1915 softshell clam
 Cardiida - Tellinidae
Macoma optiva tellin clam
 Cardiida - Ungulinidae
"Felaniella usta" = Diplodonta
"Felaniella usta" = Diplodonta clam