Mirokudake (Eocene of Japan)

Where: Japan (32.4° N, 130.2° E: paleocoordinates 39.3° N, 125.4° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Late/Upper Eocene (37.2 - 33.9 Ma)

• Orthulax japonicus zone

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collection methods: surface (float),

• COLLECTOR: A. Mizuno (c. 1964). REPOSITORY: Not stated in text, unknown.

Primary reference: T. Nagao. 1928. Palaeogene fossils of the Island of Kyushu, Japan Part I. Science Reports of the Tohoku Imperial University 9(3):97-128 [M. Uhen/B. Shipps/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 203227: authorized by Mark Uhen, entered by Mark Uhen on 06.08.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Farly modern nomenclature, and species-level assignments.
Gastropoda
 Cerithioidea - Pachychilidae
Faunus nipponicus Nagao 1928 snail
 Cerithioidea - Turritellidae
Turritella okadai n. sp. Nagao 1928 turret shell
 Sorbeoconcha - Naticidae
Polynices (Neverita) eocenica n. sp. Nagao 1928 moon snail
Polynices (Lunatia) utoensis n. sp. Nagao 1928 moon snail
 Sorbeoconcha - Rissoidae
Rissoina gemma n. sp. Nagao 1928 snail
Bivalvia
 Cardiida - Ungulinidae
Diplodonta problematica n. sp. Nagao 1928 clam
 Cardiida - Veneridae
"Macrocallista ariakensis n. sp." = Callista (Microcallista) ariakensis
"Macrocallista ariakensis n. sp." = Callista (Microcallista) ariakensis Nagao 1928 venus clam
 Pholadida - Corbulidae
"Corbula subtumida" = Caestocorbula subtumida
"Corbula subtumida" = Caestocorbula subtumida Nagao 1928 clam
 Pectinida - Anomiidae
Anomia sp. Linnaeus 1758 jingle