Ch0003 - Choshi area [Toriakeura Fm] (Cretaceous of Japan)

Also known as Loc. 3 (Kase & Maeda, 1980)

Where: Japan (35.7° N, 140.9° E: paleocoordinates 47.4° N, 143.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Toriakeura Formation, Early/Lower Aptian (121.4 - 122.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Toriakeura Fm. AGE: Lower Aptian; justification for age not reported in text. STRATIGRAPHIC POSITION: From an unknown position within the Toriakeura Fm.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

• SPECIFIC LITHOLOGY: Unknown. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Sakuma

• COLLECTOR: S. Sakuma. REPOSITORY: Not stated in text.

Primary reference: T. Kase. 1984. Early Cretaceous marine and brackish-water Gastropoda from Japan 1-262 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91334: authorized by Austin Hendy, entered by Austin Hendy on 15.09.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropods; other taxa (namely bivalves and foraminifera) often present. NOMENCLATURE: Authoritative publication, with relatively modern nomenclature, and species-resolution identifications.
Show authors, comments, and common names
Gastropoda
 Trochoidea - Nododelphinulidae
Metriomphalus nagasakiensis