Xikou Section, Zhen'an County (Permian of China)

Where: Shaanxi, China (33.3° N, 109.3° E: paleocoordinates 12.8° N, 93.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Primary reference: G. Xu and R. E. Grant. 1994. Brachiopods near the Permian-Triassic boundary in South China. Smithsonian Contributions to Paleobiology 76:1-68 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50034: authorized by David Bottjer, entered by Matthew Clapham on 04.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Trigonotretidae
Cartorhium twifurcifer n. sp., Cartorhium xikouensis n. sp.
Cartorhium twifurcifer n. sp. Xu and Grant 1994
Cartorhium xikouensis n. sp. Xu and Grant 1994
 Athyridida - Athyrididae
"Araxathyris subpentangulata n. sp." = Rectambitus subpentangulata, Rectambitus xui n. sp.1
"Araxathyris subpentangulata n. sp." = Rectambitus subpentangulata Xu and Grant 1994
Rectambitus xui n. sp.1 Shen et al. 2004
 Orthida - Enteletidae
Enteletes asymmatrosis n. sp.
Enteletes asymmatrosis n. sp. Xu and Grant 1994
 Terebratulida - Notothyrididae
Rostranteris ptychiventria n. sp.
Rostranteris ptychiventria n. sp. Xu and Grant 1994
 Rhynchonellida - Psilocamaridae
Cyrolexis beccojectus
Cyrolexis beccojectus Xu and Grant 1994
Strophomenata
 Productida - Richthofeniidae
Richthofeniidae indet.
 Orthotetida - Meekellidae
Meekella chenxianensis2, "Perigeyerella altilosina n. sp." = Perigeyerella fastigiata
Meekella chenxianensis2 Shen and Shi 2007
"Perigeyerella altilosina n. sp." = Perigeyerella fastigiata Liao and Meng 1986
1Shen et al. 2004; 2Shen and Shi 2007