Mk 15, Makariev section on the Unzha River, Kostroma (Jurassic of Russian Federation)

Where: Russian Federation (57.9° N, 43.8° E: paleocoordinates 52.1° N, 44.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Middle Oxfordian (161.2 - 155.7 Ma)

• Mk 15 - 1.80 m; Densiplicatum and Tenuiserratum Zones

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• The Oxfordian deposits are detailed in the Makariev section on the Unzha River. They consist of 5.90 m grey to dark clays with a characteristic horizon of bituminous shales in the middle part and phospahtic pebbles in the upper part.

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 58826: authorized by Martin Aberhan, entered by Sabine Nürnberg on 25.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Perisphinctidae
"Perisphinctes (Arisphinctes) ex gr. plicatilis" = Perisphinctes (Liosphinctes) plicatilis
"Perisphinctes (Arisphinctes) ex gr. plicatilis" = Perisphinctes (Liosphinctes) plicatilis Sowerby 1817 ammonite
 Ammonitida - Cardioceratidae
Cardioceras cf. mauntjoi, Cardioceras (Plasmatoceras) tenuistriatum, Cardioceras (Plasmatoceras) popilaniense, Cardioceras (Plasmatoceras) tenuicostatum, Cardioceras (Cawtoniceras) tenuiserratum, Cardioceras (Subvertebriceras) zenaidae, Cardioceras (Subvertebriceras) densiplicatum, Cardioceras (Maltoniceras) kokeni