Ta 1, Mimei locality on the Kuibyshev Reservoir, Volga River (Jurassic of Russian Federation)

Where: Russian Federation (54.6° N, 48.4° E)

• Paleocoordinates: 45.1° N, 49.2° E (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Kimmeridgian (155.7 - 150.8 Ma)

• Ta 1 - 2.00 m; Cymodoce Zone

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified mixed carbonate-siliciclastic sediments

• The stage crops out on the waterside of the Kuibyshev Reservoir (Volga River, 25 km north of the town of Ulyanovsk), between Dubky and Mimei localities. It is a thick alternance (54 m and visual gap) of marls and argillaceous limestones, containing only one black shale horizon.

Size class: macrofossils

Primary reference: P. Hantzpergue, F. Baudin, V. Mitta, A. Olferiev, and V. A. Zakharov. 1998. The Upper Jurassic of the Volga basin: ammonites biostratigraphy and correlations with standard European zonations. C. R. Acad. Sci. Paris, Sciences de la terre et des planetes 326:633-640 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 58845: authorized by Martin Aberhan, entered by Sabine Nürnberg on 25.02.2006, edited by Mihaela Krause

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Ostreida - Aulacomyellidae
Aulacomyella sp.
Aulacomyella sp. Furlani 1910 oyster
Cephalopoda
 Ammonitida - Aspidoceratidae
Aspidoceras sp.
Aspidoceras sp. Zittel 1868 ammonite
 Ammonitida - Perisphinctidae
Crussoliceras lacertosum, Rasenia ex gr. uralensis, Rasenia cf. cymodoce
Rasenia cf. cymodoce d'Orbigny 1850 ammonite
 Goniatitida - Prionoceratidae
Amoeboceras sp., "Amoebites sp." = Amoeboceras (Amoebites)
Amoeboceras sp. Hyatt 1900 ammonite
"Amoebites sp." = Amoeboceras (Amoebites) ammonite