Majiashan Quarry (Triassic of China)

Where: Anhui, China (31.6° N, 117.8° E: paleocoordinates 20.1° N, 99.8° E)

• coordinate estimated from map

When: Nanlinghu Formation, Olenekian (251.2 - 247.2 Ma)

• Specimens GMPKU-P-3086 and P-3101 were excavated from Bed 633 (Fig. 2), whereas

•specimen GMPKU-P-3188 is from Bed 617. C. brevifemoralis specimens come from beds 621–638 (about 248.53–248.34 Ma), that were previously dated using astrochronology (Fu et al., 2016).

Environment/lithology: marine; argillaceous limestone

• argillaceous limestone

Size class: macrofossils

Preservation: original phosphate

Primary reference: M. Zhou, D.-Y. Jiang, R. Motani, A. Tintori, C. Ji and Z.-Y. Sun. 2017. The cranial osteology revealed by three-dimensionally preserved skulls of the Early Triassic ichthyosauriform Chaohusaurus chaoxianensis (Reptilia: Ichthyosauromorpha) from Anhui, China. Journal of Vertebrate Paleontology e1343831 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 188665: authorized by Mark Uhen, entered by Mark Uhen on 11.09.2017, edited by Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ichthyosauria - Grippiidae
Chaohusaurus brevifemoralis n. sp. Huang et al. 2019 ichthyosaur
AGM AGB7401 (holotype), GMPKU P-3086 and AGB7403 (paratypes, as well as referred specimens: AGM AGB5846a, 5846b, 5846c, 6253, 6254, 6255, 6258, 6260, 6605, 7402, 7407, 7408, 7410, MT10022; GMPKU P-1101, P-3093; IVPP V11361. Specimens are from beds 621 to 638.
Chaohusaurus chaoxianensis Chen 1985 ichthyosaur