Yangou Section Y12 (Bed 21), Leping County (Triassic of China)

Where: Jiangxi, China (29.2° N, 117.3° E: paleocoordinates 15.3° N, 101.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Daye Formation, Griesbachian (252.2 - 251.3 Ma)

• 0.3 m thick, lowermost part of Daye Formation

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified grainstone

• gray-yellow dolomitic grainstone

Size classes: macrofossils, mesofossils

Preservation: replaced with silica

Collection methods: gastropods only; conodonts, ostracodes and brachiopods reported to be present, but not listed

Primary reference: H. Z. Pan, D. H. Erwin, A. Nützel and X. S. Zhu. 2003. Jiangxispira, a new gastropod genus from the Early Triassic of China with remarks on the phylogeny of the Heterostropha at the Permian/Triassic boundary. Journal of Paleontology 77(1):44-49 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60526: authorized by Wolfgang Kiessling, entered by Uta Merkel on 17.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Caenogastropoda - Goniasmatidae
Platyzona sp. Knight 1945 snail
 Heterostropha - Streptacididae
Streptacis sp. Meek 1871 snail
 Heterostropha - Tubiferidae
"Jiangxispira yangouensis n. gen. n. sp." = Sinuarbullina yangouensis
"Jiangxispira yangouensis n. gen. n. sp." = Sinuarbullina yangouensis Pan et al. 2003 snail
 Neritoidea - Naticopsidae
Naticopsis sp. M'Coy 1844 snail