Ch0002 - Choshi area [Kimigahama Fm] (Cretaceous of Japan)

Also known as Loc. 2 (Kase & Maeda, 1980)

Where: Japan (35.7° N, 140.9° E: paleocoordinates 46.8° N, 143.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kimigahama Formation, Barremian (129.4 - 125.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Kimigahama Fm. AGE: Barremian; justification for age not reported in text. STRATIGRAPHIC POSITION: From the lower part of the Kimigahama 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

Collection methods: COLLECTOR: T. Oji, H. Maeda, I. Hayami, and T. Kase. 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 91333: 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 - Trochidae
? Calliostoma ojii
 Trochoidea - Ataphridae
Ataphrus nipponicus
 Neritoina - Neritopsidae
Hayamia rex, Hayamia chosiensis
 Heterostropha - Ringiculidae
Eriptycha japonica
 Vanikoroidea - Vanikoridae
Vanikoropsis decussata
 Sorbeoconcha - Aporrhaidae
Pietteia cretacea, Perissoptera elegans, Ceratosiphon densestriatus