Station F-H2 - Futagojima Fm, Hashima (Eocene of Japan)

Where: Japan (32.6° N, 129.6° E: paleocoordinates 38.0° N, 123.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Futagojima Formation, Middle Eocene (48.6 - 37.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Futagojima Fm, which overlies the Koyagi Fm, and underlies the Hashima Fm. THICKNESS: From bed within lower part of formation that attains a thickness of 320 m. AGE: Middle Eocene, based on molluscan biostratigraphy. STRATIGRAPHIC POSITION: From bed near base of formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified siltstone

• ENVIRONMENT: Shallow marine, siliciclastic environment..
• SPECIFIC LITHOLOGY: Siltstone. LITHIFICATION: Presumed lithified on the basis of age.

Size class: macrofossils

Collection methods: surface (float),

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

Primary reference: A. Mizuno. 1964. Paleogene and Early Neogene molluscan faunae in West Japan. Geological Survey of Japan Report 204 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71013: authorized by Austin Hendy, entered by Austin Hendy on 14.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Farly modern nomenclature, and species-level assignments.
unclassified
  -
Bivalvia
 Carditida - Carditidae
Venericardia (Cardites) sp. Lamarck 1801 clam
Gastropoda
 Sorbeoconcha - Turritellidae
Colpospira okadai turret shell