Yuanjia, Jiahe Region (Longtan Fm) (Permian of China)

Where: Hunan, China (25.6° N, 112.4° E: paleocoordinates 5.0° N, 101.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Longtan Formation, Wuchiapingian (259.9 - 254.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Primary reference: Y. X. Zhang. 1981. Late Permian bivalves from Yuanjia of Jiahe, Hunan Province. Acta Palaeontologica Sinica 20:260-265 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121731: authorized by Matthew Clapham, entered by Matthew Clapham on 11.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Parallelodontidae
Parallelodon striatus von Schlotheim 1816 clam
 Myalinida - Myalinidae
 Pectinida - Euchondriidae
Euchondria sp. Meek 1874 scallop
Euchondria hunanensis n. sp. Zhang 1981 scallop
Euchondria sinensis Frech 1911 scallop
Euchondria jingxianensis Gu and Liu 1976 scallop
 Pectinida - Limidae
Crenipecten cf. exilis Liu 1976 file clam
Palaeolima sp. Hind 1903 file clam
Palaeolima petaline n. sp. Zhang 1981 file clam
? Palaeolima minima Chen et al. 1974 file clam
Palaeolima fasciculicostata Liu 1976 file clam
 Pectinida - Aviculopectinidae
Paradoxipecten opisthoclinus n. sp., "Paradoxipecten jiaheensis n. gen. n. sp." = Paradoxipecten jiaheensis, "Etheripecten subquadratus n. sp." = Paradoxipecten jiaheensis, "Paradoxipecten rarocostatus n. sp." = Paradoxipecten jiaheensis, Aviculopecten lopingensis
Paradoxipecten opisthoclinus n. sp. Zhang 1981 scallop
"Paradoxipecten jiaheensis n. gen. n. sp." = Paradoxipecten jiaheensis Zhang 1981 scallop
"Etheripecten subquadratus n. sp." = Paradoxipecten jiaheensis Zhang 1981 scallop
"Paradoxipecten rarocostatus n. sp." = Paradoxipecten jiaheensis Zhang 1981 scallop
Aviculopecten lopingensis Ku 1948 scallop
 Pectinida - Heteropectinidae
Girtypecten jiaheensis n. sp. Zhang 1981 scallop
Girtypecten cf. sublaqueatus Girty 1909 scallop
"Etheripecten hunanensis n. sp." = Etheripecten sichuanensis Chen et al. 1974 scallop
 Pectinida - Hunanopectinidae
? Leptochondria sp. Bittner 1891 scallop
? Leptochondria pyriformis n. sp. Zhang 1981 scallop
? Leptochondria jiaheensis n. sp. Zhang 1981 scallop
Hunanopecten declivis n. sp. Zhang 1981 scallop
 Ostreida - Bakevelliidae
"Waagenoperna (Permoperna) sinensis" = Permoperna trapezoidalis, "Bakevellia antiqua" = Bakevellia binneyi, Bakevellia bicarinata
"Waagenoperna (Permoperna) sinensis" = Permoperna trapezoidalis Kayser 1883 oyster
"Bakevellia antiqua" = Bakevellia binneyi Brown 1841 oyster
Bakevellia bicarinata King 1848 oyster
 Pterioida -
Ensipteria cf. onukii Nakazawa and Newell 1968 clam
 Carditida - Astartidae
Astartella symmetrica Chen et al. 1974 clam
Astartella nasuta Girty 1909 clam
 Cardiida - Kalenteridae
 Pholadomyida - Edmondiidae
Edmondia rotunda Beede 1907 clam
Edmondia nebrascensis Geinitz 1866 clam
"Edmondia murchisoniana" = Edmondia elongata Howse 1848 clam
 Trigoniida - Schizodidae
Schizodus dubiiformis Waagen 1881 clam
Schizodus guizhouensis Liu and Xu 1976 clam
 Protobranchia -
 Protobranchia - Nuculanidae
Phestia hunanensis Ku and Chen 1963 pointed nut clam