Where: Guizhou, China (26.7° N, 104.4° E: paleocoordinates 6.1° N, 94.1° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ophiceras ammonoid zone, Kayitou Formation, Griesbachian (251.9 - 250.5 Ma)

• "The presence of Annalepis in the WGEY sections represents the first occurrence of a typical Triassic element in the base or lower part of the Kayitou Formation, associated with the earliest Triassic ammonoid Ophiceras and marine bivalves, and is therefore regarded as earliest Triassic in age" (Chu et al. 2017)

• bed-level stratigraphic resolution

Environment/lithology: lagoonal; siltstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (BGEG), Wuhan, China

Primary reference: D. Chu, J. Tong, M. J. Benton, J. Yu, and Y. Huang. 2017. Mixed continental-marine biotas following the Permian-Triassic mass extinction in South and North China. Palaeogeography, Palaeoclimatology, Palaeoecology 519:95-107 [A. Dunhill/B. Allen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 205960: authorized by Alex Dunhill, entered by Bethany Allen on 28.10.2019

Creative Commons license: CC BY (attribution)