Chimbulat Quarry, locality 4919/25 (Permian of Russian Federation)

Also known as Reef 4208

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, upper part of reef buildup

• group of beds-level stratigraphic resolution

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

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

Size class: macrofossils

Preservation: mold/impression

Collected by A.V. Mazaev, M.S. Boiko, O.P. Shilovsky in 2004-2013; reposited in the PIN

Collection methods: mechanical,

Primary reference: A. V. Mazaev. 2015. Middle Permian rostroconchs of the Kazanian stage of the East European Platform. Paleontological Journal 49(3):238-249 [M. Clapham/M. Clapham/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 170190: authorized by Matthew Clapham, entered by Matthew Clapham on 16.06.2015, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

Rostroconchia
 Conocardiida - Bransoniidae
 Anetshelloida - Anetshellidae
Gastropoda
 Trochonematoidea - Lophospiridae
Biarmeaspira striata1 Mazaev 2015 snail
Biarmeaspira yakowlewi1 Licharew 1967 snail
 Euomphalina - Euomphalidae
Araeonema tenuistriata1 Netchaev 1894 snail
 Euomphalina - Elasmonematidae
Anematina rugoza1 Mazaev 2015 snail
 Euomphalina - Platyceratidae
Stuckenbergispira kazanensis1 Mazaev 2015 snail
 Prosobranchia - Meekospiridae
Nemdaella leonovae n. sp.1 Mazaev 2015 snail
Meekospira symmetrica1 King 1844 snail
 Prosobranchia - Goniasmatidae
"Goniasma golowkinskii" = Goniasma subangulata1
"Goniasma golowkinskii" = Goniasma subangulata1 de Verneuil 1845 snail
 Prosobranchia - Orthonematidae
Arribazona lata1, "Kazanella volgensis" = Kazankiella volgensis1
Arribazona lata1 Netchaev 1894 snail
"Kazanella volgensis" = Kazankiella volgensis1 Golowinsky 1868 snail
 Prosobranchia - Pseudozygopleuridae
Levizygopleura elegans1 Mazaev 2015 snail
 Cerithimorpha - Orthonemidae
Paleostylus kukarkensis1 Mazaev 2015 snail
 Heterostropha - Donaldinidae
Royalella aufuga1 Mazaev 2015 snail
 Murchisoniina - Gosseletinidae
Neilsonia nuda n. sp.1 Mazaev 2015 snail
 Murchisoniina - Soleniscidae
Soleniscus netchaevi1 Mazaev 2015 snail
 Pleurotomariida - Portlockiellidae
Permoconcha minutula1 Mazaev 2015 snail
 Pleurotomariida - Phymatopleuridae
Fetaspira semifacta n. gen. n. sp.1 Mazaev 2015 snail
Eirlysia globosa1 Mazaev 2015 snail
Eirlysia undata1 Mazaev 2015 snail
Eirlysia scalare1 Mazaev 2015 snail
Eirlysia lata1 Mazaev 2015 snail
Eirlysia nodata1 Mazaev 2015 snail
Eirlysia seminuda1 Mazaev 2015 snail
Baylea chimbulatiensis1 Mazaev 2015 snail
Baylea subpenea1 Netchaev 1894 snail
Baylea rigida1 Mazaev 2015 snail
Baylea vjatkensis1 Mazaev 2015 snail
Baylea nemdaensis1 Mazaev 2015 snail
Juvenispira esaulovae1 Mazaev 2015 snail