Okuyama, KH-4, 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)

• About 100 m below 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 115245: 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) narawarensis
"Bakevellia" sp. King 1848 oyster
 Pectinida - Claraiidae
"Claraia aff. decidens" = Crittendenia decidens
"Claraia aff. decidens" = Crittendenia decidens Bittner 1899 scallop
 Pectinida - Limidae
"Lima" sp.
"Lima" sp. Bruguière 1797 file clam
 Trigoniida - Myophoriidae
"Myophoria" sp.
"Myophoria" sp. Bronn 1834 clam
 Nuculanida - Malletiidae
Palaeoneilo "sp. gamma", Palaeoneilo "sp. delta"
Palaeoneilo "sp. gamma" Hall and Whitfield 1869 clam
Palaeoneilo "sp. delta" Hall and Whitfield 1869 clam
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail