Hn0303 - Miyako area [Tanohata Fm] (Cretaceous of Japan)

Where: Japan (39.9° N, 141.9° E: paleocoordinates 53.1° N, 140.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tanohata Formation, Late/Upper Aptian (122.5 - 112.0 Ma)

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

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, sandy siltstone and lithified sandstone

• SPECIFIC LITHOLOGY: Highly calcareous medium-grained sandstone including round pebbles of basement rocks. 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 91264: authorized by Austin Hendy, entered by Austin Hendy on 13.09.2009

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.
Florideophyceae
 Corallinales - Corallinophycidae
Corallinales indet. Silva and Johansen 1986
Anthozoa
  -
Anthozoa indet. Ehrenberg 1834
Gastropoda
 Pseudomelanoidea - Trajanellidae
Bivalvia
 Hippuritida - Polyconitidae