Torinosu Peninsula crinoids (Miocene to of Japan)

Also known as Tanabe Bay

Where: Japan (39.0° N, 141.7° E: paleocoordinates 42.5° N, 138.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: M2 Member (Shirahama Formation), Early/Lower Miocene to Early/Lower Miocene (23.0 - 11.6 Ma)

• from a single bedding plane "in the middle part (the M2 Member) of the Shirahama Formation... late Early to early Middle Miocene (ca. 16 Ma)"

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, conglomeratic sandstone

• "shallow upper shelf... represents a high-energy paleoenvironment"
• fossils are from "large [medium-grained conglomeratic] sandstone slabs" from a 2.8 section with "alternating beds of fine-grained and medium-grained sandstone... The fine-grained sandstone is usually muddy, associated in places with bluish-gray mudstone, and contains carbonaceous matter. The beds are occasionally cross-stratified. The medium-grained sandstone is well consolidated... poorly sorted, and sometimes conglomeratic"

Size class: macrofossils

Collection methods: National Science Museum, Tokyo collection

Primary reference: T. F. Shibata and T. Oji. 2007. Kiimetra miocenica, a new genus and species of the family Calometridae (Echinodermata : Crinoidea) from the Middle Miocene of southwestern Japan. Journal of Paleontology 81(2):397-404 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90777: authorized by John Alroy, entered by John Alroy on 16.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Comatulida - Calometridae
Kiimetra miocenica n. gen. n. sp.
Kiimetra miocenica n. gen. n. sp. Shibata and Oji 2007 Feather star
Bivalvia
 Ostreida - Ostreidae
Crassostrea gravitesta
 Ichnofossils -
Skolithos sp.
Skolithos sp. Haldemann 1840