Volga River near Krasnovidovo (Permian of Russian Federation)

Where: Tatarstan, Russian Federation (55.4° N, 49.1° E: paleocoordinates 27.4° N, 43.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Podluzhnik Member (Uslon Formation), Roadian (272.3 - 268.8 Ma)

• Upper Kazanian Substage, Volgian Horizon, Upper Uslon Beds, Podluzhnik Member

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, ooidal, white, yellow grainstone

• "negative oolite" - white or yellow grainstone with oolites or holes of oolites

Size class: macrofossils

Preservation: mold/impression

Collected by A.A. Stuckenberg

• Repository: Kazan State University (KGU)

Primary reference: A. V. Mazaev. 2012. Anetshelloida, a new rostroconch order (Mollusca: Rostroconchia). Paleontological Journal 46(2):121-131 [M. Clapham/M. Clapham/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 126331: authorized by Matthew Clapham, entered by Matthew Clapham on 04.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Rostroconchia
 Anetshelloida - Anetshellidae
"Lepetopsis golowinskyi n. sp." = Anetshella golowinskyi2
"Lepetopsis golowinskyi n. sp." = Anetshella golowinskyi2 Netschajew 1894
No 2 in Netchaev's measurements
Gastropoda
 Prosobranchia - Goniasmatidae
Goniasma subangulata1 de Verneuil 1845 snail
 Prosobranchia - Orthonematidae
"Murchisonia lata n. sp." = Arribazona lata1
"Murchisonia lata n. sp." = Arribazona lata1 Netchaev 1894 snail
 Prosobranchia - Pseudozygopleuridae
"Loxonema ornamentaria n. sp." = Stephanozyga ornamentaria1
"Loxonema ornamentaria n. sp." = Stephanozyga ornamentaria1 Netchaev 1894 snail
 Cerithimorpha - Orthonemidae
Paleostylus stuckenbergi1 Mazaev 2015 snail
Loxonema sp. 1 in Netchaev 1894