Okuyama, KH-2, Kawahigashi (Triassic of Japan)

Where: Japan (35.4° N, 135.2° E: paleocoordinates 35.9° N, 111.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Narabara Formation, Olenekian (251.2 - 247.2 Ma)

• Uppermost horizon of formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• Dark blue, banded or laminated sandy shale and shale, more or less slaty and often calcareous, with fine-grained sandstone (based on description of formation).

Size class: macrofossils

Preservation: mold/impression

Primary reference: K. Nakazawa. 1953. Discovery of Claraia and Eumorphotis from Triassic Yakuno Group, Kyoto Pref, Japan. Memoirs of the College of Science, University of Kyoto, Series B 20:261-269 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115244: authorized by Matthew Clapham, entered by Matthew Clapham on 31.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Ostreida - Bakevelliidae
"Bakevellia" sp., Bakevellia (Maizuria) okuyamensis
"Bakevellia" sp. King 1848 oyster
Bakevellia (Maizuria) okuyamensis Nakazawa 1959 oyster
 Pectinida - Claraiidae
Claraia sp.
Claraia sp. Bittner 1901 scallop
 Pectinida - Limidae
"Lima" sp.
"Lima" sp. Bruguière 1797 file clam
Cephalopoda
 Ceratitida - Ophiceratidae
"Ophiceras" sp.
"Ophiceras" sp. Griesbach 1880 ceratite
 Ceratitida - Xenodiscidae
"Xenodiscus" sp.
"Xenodiscus" sp. Waagen 1879 ceratite