Levyy Titan Creek, Bed 42, Intomodesma costatum Subzone, Okhotsk Massif (Permian of Russian Federation)

Where: Russian Federation (61.1° N, 147.2° E: paleocoordinates 77.0° N, 32.9° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Kulu Formation, Wuchiapingian (259.9 - 254.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, fine-grained, medium, gray, green sandstone and lithified, argillaceous, carbonaceous siltstone

• Alternating beds (5–10 m) of light greenish gray fine to medium-grained compact massive sandstones and packets of intercalated thin-bedded light greenish gray fine-grained sandstones and greenish gray todark gray, sometimes, carbonaceous–

•clayey siltstones with laminae (from 1 mm to 1–3 cm) of black shales. The section encloses rare interbeds of fine- to medium-grained poorly sorted clayey sandstones and ellipsoid calcareous concretions 5 × 10 cm in size. There are

•also rare interbeds (5–10 cm) of small- to medium-pebbled conglomerates at the top of the member and 55 m below the latter.

Size class: macrofossils

Primary reference: A. S. Biakov. 2007. Permian biostratigraphy of the northern Okhotsk region (northeast Asia). Stratigraphy and Geological Correlation 15(2):161-184 [M. Clapham/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 98148: authorized by Matthew Clapham, entered by Matthew Clapham on 21.09.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Monobathrida - Dichocrinidae
Neocamptocrinus arcticus
Neocamptocrinus arcticus Sea lily
columnals
Gastropoda
 Murchisoniina - Gosseletinidae
? Glabrocingulum sp.
? Glabrocingulum sp. Thomas 1940 snail
 Bellerophontida - Bellerophontidae
Bellerophontidae indet.
Bellerophontidae indet. M'Coy 1851 snail
Bivalvia
 Cardiidia - Sanguinolitidae
? Praeundulomya cf. sinualis
 Myalinida - Atomodesmatidae
Intomodesma sp., Intomodesma costatum, ? Maitaia sp.
Intomodesma sp. Popov 1958 clam
Intomodesma costatum Popov 1958 clam
? Maitaia sp. Marwick 1934 clam
 Pectinida - Streblochondriidae
? Guizhoupecten cf. corrugatus
Rostroconchia
 Conocardiida - Bransoniidae
"Conocardium cf. robustum" = Bransonia robustum
"Conocardium cf. robustum" = Bransonia robustum Fletcher 1943
Rhynchonellata
 Spiriferida - Spiriferellidae
? Spiriferella sp.
? Spiriferella sp. Tschernyschew 1902
 Spiriferida - Trigonotretidae
Neospirifer sp.
Neospirifer sp. Fredericks 1919
 Terebratulida - Beecheriidae
"Beecheria" sp.
"Beecheria" sp. Hall and Clarke 1893