Xiaoba section, Anxian county, bed 5 (Permian of China)

Where: Sichuan, China (31.6° N, 104.3° E: paleocoordinates 8.8° 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 148512: 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
Knoxiella xinhuaensis
Knoxiella xinhuaensis Wang 1978 ostracod
 Palaeocopida - Kirkbyidae
? Kirkbya sp.
? Kirkbya sp. Jones 1859 ostracod
 Podocopida - Microcheilinellidae
Microcheilinella anxianensis
 Podocopida - Bairdiocyprididae
? Silenites sp.
 Podocopida - Bairdiidae
Petasobairdia sp., Bairdiacypris ventralis, Bairdia xiaobaensis n. sp., Bairdia hassi
Petasobairdia sp. Chen 1982 ostracod
Bairdiacypris ventralis Chen 1958 ostracod
Bairdia xiaobaensis n. sp. Xie 1989 ostracod
Bairdia hassi Sohn 1960 ostracod