Kawanishi Primary School, Gujo, Oe-cho, Kyoto Prefecture (Permian of Japan)

Where: Japan (35.4° N, 135.1° E: paleocoordinates 32.2° N, 111.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Gujo Formation, Changhsingian (254.2 - 252.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, black shale

Size class: macrofossils

Preservation: mold/impression, replaced with pyrite

Primary reference: K. Nakazawa and N.D. Newell. 1968. Permian bivalves of Japan. Memoirs of the Faculty of Science, Kyoto University, Series of Geology and Mineralogy 35(1):1-108 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 114491: authorized by Matthew Clapham, entered by Matthew Clapham on 15.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Myalinida - Myalinidae
Septimyalina sp. Newell 1942 clam
 Pectinida - Aviculopectinidae
Aviculopecten shiroshitai n. sp. Nakazawa and Newell 1968 scallop
 Pectinida - Hunanopectinidae
? Leptochondria "sp. a" Bittner 1891 scallop
? Leptochondria "sp. b" Bittner 1891 scallop
 Pectinida - Entoliidae
? Pernopecten sp. Winchell 1865 scallop
 Ostreida - Bakevelliidae
Towapteria cf. nipponica Nakazawa and Newell 1968 oyster
Tambanella gujoensis n. gen. n. sp. Nakazawa and Newell 1968 oyster
Bakevellia (Bakevellia) gujoensis n. sp. Nakazawa 1959 oyster
 Ostreida - Pinnidae
Aviculopinna sp. Meek 1864 oyster
 Ostreida - Ostreidae
? Lopha murakamii n. sp. Nakazawa and Newell 1968 oyster
 Mytilida - Mytilidae
Promytilus "sp. a" Newell 1942 mussel
Promytilus ? maiyensis Nakazawa and Newell 1968 mussel
 Pholadomyida - Megadesmidae
Pyramus planus n. sp. Nakazawa and Newell 1968 clam
 Pholadomyida - Edmondiidae
Edmondia "sp. a" de Koninck 1841 clam
Edmondia "sp. b" de Koninck 1841 clam
 Cardiida - Kalenteridae
Permophorus tenuistriatus n. sp. Nakazawa and Newell 1968 clam
Gujocardita oviformis n. gen. n. sp. Nakazawa and Newell 1968 clam
 Cardiidia - Sanguinolitidae
Vacunella rostrata n. sp. Nakazawa and Newell 1968 clam
 Trigoniida - Myophoriidae
Costatoria kobayashii Kambe 1951 clam
Neoschizodus permicus n. sp. Nakazawa 1960 clam
 Unionida - Actinodontophoridae
Strophomenata
 Orthotetida - Meekellidae
"Schellwienella cf. ruber" = Orthothetina ruber
"Schellwienella cf. ruber" = Orthothetina ruber Frech 1911
 Productida -