Chimbulat Quarry, locality 4919/11 (Permian of Russian Federation)

Where: Kirov, Russian Federation (57.4° N, 48.9° E: paleocoordinates 28.6° N, 41.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nemda Formation, Roadian (272.3 - 268.8 Ma)

• Upper Kazanian substage

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks

• "reef-building bodies"
• Reef limestone with abundant crinoid stems, bryozoans, and brachiopods

Size class: macrofossils

Preservation: mold/impression

Collected by A.V. Mazaev, M.S. Boiko, O.P. Shilovsky in 2004, 2005; reposited in the PIN

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 126333: authorized by Matthew Clapham, entered by Matthew Clapham on 04.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Rostroconchia
 Anetshelloida - Anetshellidae
Anetshella golowinskyi Netschajew 1894
Gastropoda
 Trochonematoidea - Lophospiridae
Biarmeaspira striata Mazaev 2015 snail
Biarmeaspira yakowlewi Licharew 1967 snail
 Euomphalina - Anomphalidae
Anomphalus barskovi Mazaev 2015 snail
 Euomphalina - Platyceratidae
 Prosobranchia - Meekospiridae
Nemdaella leonovae Mazaev 2015 snail
Meekospira symmetrica King 1844 snail
 Prosobranchia - Goniasmatidae
"Goniasma golowkinskii" = Goniasma subangulata
"Goniasma golowkinskii" = Goniasma subangulata de Verneuil 1845 snail
 Prosobranchia - Orthonematidae
Arribazona burovi Mazaev 2015 snail
Arribazona kasanensis Netchaev 1894 snail
 Prosobranchia - Pseudozygopleuridae
Levizygopleura elegans Mazaev 2015 snail
 Cerithimorpha - Orthonemidae
Paleostylus kukarkensis Mazaev 2015 snail
Paleostylus krotovi n. sp. Mazaev 2015 snail
 Murchisoniina - Gosseletinidae
Neilsonia nuda Mazaev 2015 snail
Glabrocingulum piktorskyi n. sp. Mazaev 2015 snail
 Murchisoniina - Soleniscidae
Bulimorpha lavrskyi Mazaev 2015 snail
 Pleurotomariida - Phymatopleuridae
Fetaspira semifacta Mazaev 2015 snail
Eirlysia undata Mazaev 2015 snail
Eirlysia scalare Mazaev 2015 snail
Eirlysia lata n. sp. Mazaev 2015 snail
Eirlysia nodata Mazaev 2015 snail
Eirlysia seminuda Mazaev 2015 snail
Eirlysia lens n. sp. Mazaev 2015 snail
Baylea chimbulatiensis Mazaev 2015 snail
Baylea subpenea Netchaev 1894 snail
Baylea rigida Mazaev 2015 snail
Baylea nemdaensis Mazaev 2015 snail
Juvenispira esaulovae n. gen. n. sp. Mazaev 2015 snail