Sn0005 - Sanchu area [Ishido Fm] (Cretaceous of Japan)

Where: Japan (36.1° N, 138.8° E: paleocoordinates 46.8° N, 140.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

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

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

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, gray sandstone

• SPECIFIC LITHOLOGY: Massive, light gray, fine-grained sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Kase

• COLLECTOR: 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 91336: 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.
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Gastropoda
 Sorbeoconcha - Carinariidae
Brunonia annulata
Bivalvia
 Trigoniida - Megatrigonioidae
Pterotrigonia pocciliformis
 Ostreida - Ostreidae
Rastellum (Arctostrea) carinatum