Luoping area, upper member of Guanling Formation limestone (middle Anisian) (Triassic of China)

Where: Yunnan, China (24.9° N, 104.3° E: paleocoordinates 10.9° N, 94.2° E)

• coordinate based on political unit

• local area-level geographic resolution

When: upper Member (Guanling Formation), Pelsonian (247.2 - 242.0 Ma)

• The Luoping Biota may be attributed to the middle part of the upper Member of the Anisian Guanling Formation in Yunnan Province (Fig. 2). Biostratigraphical study of conodonts has suggested a Pelsonian age for this biota (Zhang et al. 2009; Huang et al. 2009)

Environment/lithology: marine; limestone

• Fossiliferous layers were most probably deposited in low-energy, dysoxic to anoxic conditions, with episodic oxygenation of bottom waters (Sun et al. 2009; Hu et al. 2011).

Size class: macrofossils

Collection methods: quarrying, surface (in situ), mechanical,

• Wuhan Institute of Geology and Mineral Recourses (WIGM) collection

•CCCGS, Chengdu Center of China Geological Survey, Chengdu, China

Primary reference: L. Cheng, X. -H. Chen, X. Zeng and Y. Cai. 2012. A new eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan Province. Journal of Earth Science 23(1):33-40 [R. Benson/R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123839: authorized by Roger Benson, entered by Roger Benson on 31.01.2012, edited by Bethany Allen and Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Diapsida - Saurosphargidae
Largocephalosaurus polycarpon n. gen. n. sp. Cheng et al. 2012 diapsid
Wuhan Institute of Geology and Mineral Recourses (WIGM) SPC V 1009, a nearly complete and articulated skeleton
 Eosauropterygia - Pachypleurosauridae
Luopingosaurus imparilis n. gen. n. sp.4
Luopingosaurus imparilis n. gen. n. sp.4 Xu et al. 2023 diapsid
IVPP V19049
 Eosauropterygia -
Dianmeisaurus gracilis n. gen. n. sp.3
Dianmeisaurus gracilis n. gen. n. sp.3 Shang and Li 2015 diapsid
IVPP V 18630, nearly complete skeleton
 Sauropterygia -
Atopodentatus unicus1 Cheng et al. 2014 diapsid
IVPP V20291, V20292
 Ichthyosauria - Mixosauridae
"Mixosaurus atavus" = Phalarodon atavus2
"Mixosaurus atavus" = Phalarodon atavus2 Quenstedt 1852 ichthyosaur
LPV 30872 skeleton