Shioya Group Kanomatazawa Fm Molluscan Fauna Locality 16 (Miocene of Japan)

Also known as Locality 16

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, gray, sandy siltstone

• 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 52239: 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
Bivalvia
 Nuculida - Nuculidae
Acila sp.
Acila sp. Adams and Adams 1858 divaricate nutclam
 Nuculanida - Yoldiidae
Yoldia (Cnesterium) notabilis
 Lucinida - Lucinidae
"Lucinoma annulata" = Lucinoma annulatum
"Lucinoma annulata" = Lucinoma annulatum Reeve 1850 clam
 Solenida - Pharidae
Cultellus izumoensis
Cultellus izumoensis Yokoyama 1923 clam
 Cardiida - Tellinidae
Macoma optiva
Macoma optiva tellin clam
Dominant species at locality
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium yokoyamai
Gastropoda
 Neogastropoda - Buccinidae
Phos iwakianus
Phos iwakianus true whelk