Ezhovo Locality, PIN 1758 (Permian of Russian Federation)

Also known as Ocher Localities, Yezhovo,

Where: Perm, Russian Federation (57.8° N, 54.7° E: paleocoordinates 31.9° N, 43.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Estemmenosuchus uralensis other zone, Urzhumian (266.9 - 264.3 Ma)

• Ocher Subassemblage of the Ocher Assemblage; the terminal part of the Late Kazanian to the early part of the Early Tatarian (=Urzhumian) (Golubev 2000); Urzhumian according to Benton (2012; Geology)

• group of beds-level stratigraphic resolution

Environment/lithology: delta plain; ferruginous, red, argillaceous, muddy sandstone and argillaceous conglomerate

• "flood plain" Olson (1962)

•The sandy-argillaceous deposits containing the bones represent distributarys of the main stream within a deltaic setting. (informations are from Tchudinov, 1962)

• "Sandstone with beds of clay" Olson (1957);

•The bone-bearing section is mainly composed of fine-grained, clayey, reddish-brown, red, or orange-red, ferruginous sandstones with intercalations of claystone and inclusions of black, carbonaceous matter. Also, the section comprises conglomerates, composed of medium to small pebbles which consist of metamorphic or igneous rocks. (informations are from Tchudinov, 1962, Priroda 1962(4))

Size class: macrofossils

Preservation: concretion, recrystallized, permineralized, replaced with calcite

Reposited in the PIN

Primary reference: E. C. Olson. 1962. Late Permian terrestrial vertebrates, U.S.A. and U.S.S.R. Transactions of the American Philosophical Society, New Series 52(2):1-224 [J. Mueller/J. Dummasch/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87102: authorized by Johannes Mueller, entered by Torsten Liebrecht on 04.03.2009, edited by Richard Butler and Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

Amphibia
 Temnospondyli - Archegosauridae
Collidosuchus tchudinovi n. gen. n. sp.2
Collidosuchus tchudinovi n. gen. n. sp.2 Gubin 1986 tetrapod
PIN 1758/334 (Holotype: incomplete skull)
 Temnospondyli - Dissorophidae
Kamacops acervalis3 Gubin 1980 tetrapod
PIN 1758/332 and 333
 Temnospondyli - Konzhukoviidae
Konzhukovia tarda n. sp.2 Gubin 1991 tetrapod
PIN 1758/253, 254, skulls
Osteichthyes
 Anomodontia -
Otsheria netzvetajevi n. gen. n. sp.2
Otsheria netzvetajevi n. gen. n. sp.2 Chudinov 1960 therapsid
PIN 1758/5 (type)
 Therapsida -
Eotitanosuchus olsoni n. gen. n. sp., "Biarmosuchus tener n. gen. n. sp." = Biarmosuchus tener4, "Ivantosaurus ensifer n. gen. n. sp." = Biarmosuchus tener1, "Biarmosaurus antecessor n. gen. n. sp." = Biarmosuchus tener4
Eotitanosuchus olsoni n. gen. n. sp. Tchudinov 1960 therapsid
PIN 1758/1 (type), 1758/85, 1758/319; specimens listed besides the type are reported by Battail & Surkov (2000)
"Biarmosuchus tener n. gen. n. sp." = Biarmosuchus tener4 Chudinov 1960 therapsid
PIN 1758/2 (type). PIN 1758/8, 1758/18, 1758/19, 1758/255, 1758/86, 1758/260, 1758/320
"Ivantosaurus ensifer n. gen. n. sp." = Biarmosuchus tener1 Chudinov 1960 therapsid
PIN 1758/292 (type)
"Biarmosaurus antecessor n. gen. n. sp." = Biarmosuchus tener4 Chudinov 1960 therapsid
PIN 1758/7 (type), skull
 Therapsida - Estemmenosuchidae
"Estemmenosuchus uralensis n. gen. n. sp." = Estemmenosuchus uralensis2, "Anoplosuchus tenuirostris n. gen. n. sp." = Estemmenosuchus uralensis2, "Zopherosuchus luceus n. gen. n. sp." = Estemmenosuchus uralensis2, Estemmenosuchus mirabilis n. sp.2
"Estemmenosuchus uralensis n. gen. n. sp." = Estemmenosuchus uralensis2 Chudinov 1960 therapsid
PIN 1758/4 (holotype), 22, 23, 27, 82, 84, 327, 330
"Anoplosuchus tenuirostris n. gen. n. sp." = Estemmenosuchus uralensis2 Chudinov 1960 therapsid
PIN 1758/79 (holotype), skeleton
"Zopherosuchus luceus n. gen. n. sp." = Estemmenosuchus uralensis2 Chudinov 1960 therapsid
PIN 1758/300 (holotype), skeleton
Estemmenosuchus mirabilis n. sp.2 Tchudinov 1968 therapsid
PIN 1758/6 (holotype), skeleton
 Therapsida - Anteosauridae
Archaeosyodon praeventor n. gen. n. sp.2, Chthomaloporus lenocinator n. gen. n. sp.1
Archaeosyodon praeventor n. gen. n. sp.2 Tchudinov 1960 therapsid
PIN 1758/3 (type). PIN 1758/93, a fragmentary skull; PIN 1758/94, a fragmentary skull; PIN 1758/95, a largely complete skull missing the occipital region (Fig. 13); PIN 1758/293, a laterally crushed but nearly complete skull missing part of the temporal arches (Fig. 11A, C); PIN 1758/294, the symphyseal region of a left dentary; PIN 1758/295, a partial left dentary; PIN 1758/296, a right maxilla; PIN 1758/297, a nearly complete left dentary (Fig. 12); PIN 1758/309, a series of palatal fragments including a well preserved pterygoid boss; PIN 1758/310, a fragmentary skull; PIN 1758/311, an isolated parietal region of a skull roof; PIN 1758/312, a right maxilla; PIN 1758/313, a left maxilla; PIN 1758/314, a nearly complete right dentary; PIN 1758/315, a left canine; PIN 1758/316, a fragmentary left maxilla with canine; PIN 1758/317, a fragmentary left maxilla with canine; PIN 1758/318, a left maxilla; and PIN 1758/328, a partial right dentary.
Chthomaloporus lenocinator n. gen. n. sp.1 Tchudinov 1964 therapsid
PIN 1758/17 (holotype), postcrania