Youjianzhai-4 (Triassic of China)

Where: Guizhou, China (25.6° N, 106.8° E: paleocoordinates 6.5° N, 96.5° E)

When: Hindeodus parvus conodont zone, Daye Formation, Griesbachian (251.9 - 250.5 Ma)

Environment/lithology: open shallow subtidal; lithified, calcareous packstone

Size class: mesofossils

Preservation: original calcite, replaced with calcite

Collection methods: bulk, mechanical,

Primary reference: W.J. Foster, D.J. Lehrmann, M. Yu, L. Ji, and R.C. Martindale. 2018. Persistent Environmental Stress Delayed the Recovery of Marine Communities in the Aftermath of the Latest Permian Mass Extinction. Paleoceanography and Paleoclimatology 33:338-353 [W. Foster/W. Foster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 200988: authorized by William Foster, entered by William Foster on 28.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Lingulata
 Lingulida - Lingulidae
Sinolingularia huananensis Peng and Shi 2008
Gastropoda
 Caenogastropoda - Goniasmatidae
Wannerispira shangganensis Kaim and Nützel 2010 snail
 Caenogastropoda - Coelostylinidae
cf. Coelostylina sp. Kittl 1894 snail
 Bellerophontida - Euphemitidae
Warthia vaceki Bittner 1899 snail
 Neritoidea - Naticopsidae
Naticopsis sp. M'Coy 1844 snail
Vernelia samae Foster et al. 2019 snail
Bivalvia
 Ostreida - Bakevelliidae
Towapteria scythica Wirth 1936 oyster
"Bakevellia ceratophaga" = Bakevellia (Bakevellia) ceratophaga von Schlotheim 1816 oyster
Bakevellia exporrecta Lepsius 1878 oyster
 Pectinida - Claraiidae
 Pectinida - Hunanopectinidae
Leptochondria spp. Bittner 1891 scallop
 Myalinida - Atomodesmatidae
Atomodesma hautmanni Foster et al. 2019 clam
 Myalinida - Myalinidae
Promyalina putiatinensis Kiparisova 1938 clam
 Trigoniida - Myophoriidae
Neoschizodus laevigatus Ziethen 1830 clam
 Carditida - Astartidae
Astartopsis ? sp. de Loriol 1891 clam
 Cardiida - Kalenteridae
Permophorus bregeri Girty 1927 clam
 Cardiida - Anthracosiidae
"Austrotindaria ? canalensis" = Unionites canalensis
"Austrotindaria ? canalensis" = Unionites canalensis Catullo 1847 clam
 Nuculanida - Nuculanidae
Dacryomya skorochodi Kiparisova 1938 pointed nut clam
 Nuculanida - Tindariidae
Austrotindaria svalbardensis Foster et al. 2017 clam
Tentaculita
 Microconchida -
Microconchus aberrans Hohenstein 1913