Upper Volga River Region and along the banks of the Unzha River (Jurassic of Russian Federation)

Where: Russian Federation (57.0° N, 43.0° E: paleocoordinates 51.1° N, 44.4° E)

• coordinate estimated from map

• basin-level geographic resolution

When: Early/Lower Callovian (164.7 - 161.2 Ma)

• Russian Plain, strata of the calloviense Zone

• group of beds-level stratigraphic resolution

Environment/lithology: marine; micaceous sandstone and claystone

Size class: macrofossils

Primary reference: D. N. Kiselev. 1997. A new species of the genus Cadoceras (Ammonoidea) from the Callovian of the Unzha River. Paleontological Journal 31(6):583-587 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38837: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 09.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Cardioceratidae
Cadoceras (Bryocadoceras) sokolovi n. sp., "Pseudocadoceras (Pseudocadoceras) boreale" = Cadoceras (Pseudocadoceras), "Pseudocadoceras (Pseudocadoceras) tsytovichae" = Cadoceras (Pseudocadoceras), "Pseudocadoceras (Costacadoceras) sp." = Cadoceras (Pseudocadoceras), Chamoussetia phillipsi, Chamoussetia cf. buckmani
Cadoceras (Bryocadoceras) sokolovi n. sp. Kiselev 1997 ammonite
"Pseudocadoceras (Pseudocadoceras) boreale" = Cadoceras (Pseudocadoceras) ammonite
"Pseudocadoceras (Pseudocadoceras) tsytovichae" = Cadoceras (Pseudocadoceras) ammonite
"Pseudocadoceras (Costacadoceras) sp." = Cadoceras (Pseudocadoceras) Buckman 1918 ammonite
 Ammonitida - Kosmoceratidae
 Ammonoidea -