Shioya Group Kanomatazawa Fm Molluscan Fauna Locality 13 (Miocene of Japan)

Also known as Locality 13

Where: Japan (36.7° N, 140.1° E: paleocoordinates 38.0° N, 138.6° E)

• coordinate based on political unit

• local area-level geographic resolution

When: upper Member (Kanomatazawa Formation), Late/Upper Miocene (11.6 - 5.3 Ma)

• middle unit of shioya group, divided into two members, lower and upper.

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, coarse-grained conglomerate and lithified, medium-grained, conglomeratic sandstone

• This formation is subdivided into the lower and upper members. The two members differ from each other in their distribution as well as their lithological characteristics. The Lower member is distributed in the whole surveyed area showing similar lithology at every place. Distribution of the upper member is separated at the sekiya anticline.
• The Kanomatazawa formation is composed of conglomerate sandstone siltstone and acidic pyroclastic rocks. Lithology of the upper member is represented by mudstone in the western side whereas it is represented by coarse clastic sediments in the eastern side of the anticline.

Primary reference: Y. Iwasaki. 1970. The Shiobara-type Molluscan Fauna: An ecological analysis of fossil molluscs. Journal of the faculty of science, University of Tokyo, Section 2 17(3):351-444 [A. Miller/K. Bulinski/K. Bulinski]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 52236: authorized by Arnold Miller, entered by Kate Bulinski on 01.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Neogastropoda - Buccinidae
? Siphonalia sp.
? Siphonalia sp. Adams 1863 true whelk
 Neogastropoda - Cancellariidae
Cancellaria hukusimana
Bivalvia
 Arcida - Glycymerididae
Glycymeris cisshuensis
Glycymeris cisshuensis Makiyama 1926 clam
 Cardiida - Cardiidae
Laevicardium shiobarense
Laevicardium shiobarense cockle
Dominant species at locality
 Cardiida - Tellinidae
Macoma optiva
Macoma optiva tellin clam
 Cardiida - Veneridae
Dosinia kaneharai, Dosinia japonica, Pseudamiantis ? pinguis
Dosinia japonica venus clam