Itahana Fm Molluscan Fauna Locality 10 (Miocene of Japan)

Also known as Locality 10

Where: Japan (36.0° N, 139.0° E: paleocoordinates 38.7° N, 136.5° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Itahana Formation, Miocene (23.0 - 5.3 Ma)

• formations cover unconformably the Paleozoic sedimentary rocks and crystalline shists

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; lithified conglomerate and tuff

• Overlies Yoshii and Fukushima formation and underlies Akima formation.
• The Itahana formation is composed of much coarser clastic sediments than the lower two formations. Lithofacies of the formation is changable within one horizon. Most of conglomeratic layers are lens shaped. A thick tuff bed and lignite are found in the upper part. Molluscan fossils occur richly.

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 52329: authorized by Arnold Miller, entered by Kate Bulinski on 03.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Sorbeoconcha - Naticidae
"Neverita kiritaniana" = Glossaulax didyma
"Neverita kiritaniana" = Glossaulax didyma Röding 1798 moon snail
Bivalvia
 Pectinida - Pectinoidae
"Chlamys kaneharai" = Mimachlamys kaneharai
"Chlamys kaneharai" = Mimachlamys kaneharai Yokoyama 1926 scallop
 Ostreida - Ostreidae
Ostrea gravitesta
 Arcida - Glycymerididae
Glycymeris cisshuensis
Glycymeris cisshuensis Makiyama 1926 clam
 Cardiida - Cardiidae
Laevicardium shiobarense
Laevicardium shiobarense cockle
Dominant species at locality