PBDB Collection

Shioya Group Kanomatazawa Fm Molluscan Fauna Locality 1 (Miocene of Japan)

Also known as Locality 1

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: Lower 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, fine-grained, medium, calcareous 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 52178: authorized by Arnold Miller, entered by Kate Bulinski on 28.07.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

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Bivalvia
Pectinida - Pectinoidae	"Chlamys kaneharai" = Mimachlamys kaneharai "Chlamys kaneharai" = Mimachlamys kaneharai Yokoyama 1926 scallop
Cardiida - Veneridae	Dosinia kaneharai, Dosinia japonica, Mercenaria chitaniana, "Protothaca tateiwai" = Leukoma Dosinia kaneharai venus clam Dosinia japonica venus clam Mercenaria chitaniana quahog Dominant species at locality "Protothaca tateiwai" = Leukoma venus clam
Cardiida - Ungulinidae	"Felaniella usta" = Diplodonta "Felaniella usta" = Diplodonta clam
Cardiida - Cardiidae	Laevicardium shiobarense Laevicardium shiobarense cockle
Scaphopoda
Dentaliida - Dentaliidae	Dentalium yokoyamai Dentalium yokoyamai tusk shell
Gastropoda
Neogastropoda - Buccinidae	Phos iwakianus Phos iwakianus true whelk