Khivach River, Gizhiga Basin, Khivach Horizon, Omolon Massif (Permian of Russian Federation)

Where: Russian Federation (62.8° N, 159.5° E: paleocoordinates 76.2° N, 20.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Khivach Formation, Changhsingian (254.2 - 252.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: A. S. Kashirtsev. 1959. Polevoi Atlas Fauny Permskikh Otlozhenii Severo-Vostoka SSSR 1-85 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 131245: authorized by Matthew Clapham, entered by Matthew Clapham on 22.07.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Productida - Strophalosiidae
"Strophalosia chivatschensis" = Wyndhamia gijigensis
"Strophalosia chivatschensis" = Wyndhamia gijigensis Zavodovsky 1958
Rhynchonellata
 Spiriferida - Trigonotretidae
Neospirifer invisus, Neospirifer crassiconchialis, Neospirifer wynneiformis
Neospirifer invisus Zavodovsky 1958
Neospirifer wynneiformis Zavodovsky 1959
 Terebratulida - Dielasmatidae
Dielasma einori, Dielasma convexa
Dielasma einori Zavodovsky 1958
Dielasma convexa Zavodovsky 1959
 Terebratulida - Pseudodielasmatidae
"Dielasma chivatschensis" = Marinurnula chivatschense
"Dielasma chivatschensis" = Marinurnula chivatschense Zavodowsky 1968
Stenolaemata
 Cryptostomata - Fenestellidae
"Fenestella zavodovskyi" = Rectifenestella zavodovskyi, "Fenestella gijigensis" = Rectifenestella gijigensis
"Fenestella zavodovskyi" = Rectifenestella zavodovskyi Nekhoroshev 1959
"Fenestella gijigensis" = Rectifenestella gijigensis Nekhoroshev 1959
Bivalvia
 Pectinida - Voluceropectinidae
Voluceropecten volucer1
Voluceropecten volucer1 Lutkevitch and Lobanova 1960 scallop
 Pectinida - Aviculopectinidae
Aviculopecten lobanovae2
Aviculopecten lobanovae2 Muromtseva 1984 scallop
 Myalinida - Atomodesmatidae
"Atomodesma permica" = Evenia permica2
"Atomodesma permica" = Evenia permica2 Newell 1955 clam
 Cardiidia - Sanguinolitidae
"Allorisma gibbosa" = Myonia gibbosa
"Allorisma gibbosa" = Myonia gibbosa Maslennikow 1959 clam
Anthozoa
 Stauriida - Pentaphyllidae
Hexalasma protoseptatum
Hexalasma protoseptatum Sokolov 1959 horn coral
 Stauriida - Plerophyllidae
? Plerophyllum fragile
? Plerophyllum fragile Sokolov 1959 horn coral
 Stauriida - Polycoeliidae
Gerthia sibirica, Gerthia crassa, Soshkineophyllum tsaregradskyi, "Soshkineophyllum zavodovskyi" = Fedorowskites zavodovskyi
Gerthia sibirica Sokolov 1959 horn coral
Gerthia crassa Sokolov 1959 horn coral
Soshkineophyllum tsaregradskyi Sokolov 1959 horn coral
"Soshkineophyllum zavodovskyi" = Fedorowskites zavodovskyi Sokolov 1959 horn coral
1Biakov 2024; 2Muromtseva and Guskov 1984