Locality 2, Suhara, Wakayama (Cretaceous of Japan)

Where: Japan (34.0° N, 135.2° E: paleocoordinates 44.2° N, 137.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• AGE: Barremian according to Matsukawa and Obata (1993), on the basis of ammonites Crioceratites (Paracrioceras) asiaticum and Shasticrioceras nipponicum.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, sandy mudstone

• ENVIRONMENT: Komatsu (1999) considered the facies of this collection to represent an inner shelf environment with hummocky cross-stratification, therefore assigned a Siliciclastic transition zone/lower shoreface environment. TECTONIC SETTING: No tectonic data reported. SEQUENCE STRATIGRAPHY: No sequence stratigraphic data reported.
• SPECIFIC LITHOLOGY: Sandy mudstone. LITHIFICATION: Lithified, based on figured specimens.

Size class: macrofossils

Collected by Y. Mizuno, M. Chuba, N. Sakakura

• COLLECTOR: Y. Mizuno, M. Chuba, N. Sakakura. REPOSITORY: MFM (Mizunami Fossil Museum).

Primary reference: H. Karasawa. 2000. Discovery of Early Cretaceous (Barremian) decapod Crustacea from the Arida Formation of Wakayama Prefecture, Japan. Paleontological Research 4(4):235-238 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61991: authorized by Austin Hendy, entered by Austin Hendy on 09.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COMPLETENESS: Limited due to taxonomic coverage of publication. NOMENCLATURE: Authoritative publication, modern nomenclature.
Show authors, comments, and common names
Bivalvia
 Arcida - Parallelodontidae
Nanonavis yokoyamai
Malacostraca
 Decapoda - Nephropidae
Hoploparia sp.
Hoploparia sp. M'Coy 1849 clawed lobster
 Decapoda - Callianassidae
Callianassa sakakuraorum
Callianassa sakakuraorum Karasawa 2000 decapod