Tongkou section, Beichuan, bed 34 (Permian of China)

Where: Sichuan, China (31.8° N, 104.6° E: paleocoordinates 9.1° N, 91.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: microfossils

Primary reference: Z. S. Li, Z. P. Zhan, J. Y. Dai, R. G. Jin, X. F. Zhu, J. H. Zhang, H. Q. Huang, D. Y. Xu, Z. Yan and H. M. Li. 1989. Study on the Permian-Triassic Biostratigraphy and Event Stratigraphy of Northern Sichuan and Southern Shaanxi 1-435 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 148489: authorized by Matthew Clapham, entered by Matthew Clapham on 20.07.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Palaeocopida - Knoxitidae
Langdaia sp.
Langdaia sp. ostracod
 Palaeocopida - Serenididae
Sargentina sp.
 Podocopida - Cytherideidae
Basslerella obesa
Basslerella obesa Kellett 1935 ostracod
 Podocopida - Microcheilinellidae
Microcheilinella sp.
Microcheilinella sp. Geis 1933 ostracod
 Podocopida - Bairdiocyprididae
Silenites spp.
 Podocopida - Bairdiidae
? Lobobairdia sp., Bairdia hassi, Bairdia beedei, Bairdiacypris sp., Petasobairdia cf. nantongensis
? Lobobairdia sp. Kollmann 1963 ostracod
Bairdia hassi Sohn 1960 ostracod
Bairdia beedei Ulrich and Bassler 1906 ostracod
Bairdiacypris sp. Bradfield 1935 ostracod
Petasobairdia cf. nantongensis Chen 1982 ostracod
 Platycopida - Cavellinidae
Cavellina sp.
Cavellina sp. Coryell 1928 ostracod