Lopsiya River, outcrop 41, bed 7: Late/Upper Kimmeridgian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Aulacostephanidae
Aulacostephanus (Aulacostephanus) pinguis Ziegler 1962
Zakharov et al. 2005
Aulacostephanus (Aulacostephanus) yo (d'Orbigny 1850)
(1 measurement)
Aulacostephanus (Aulacostephanoceras) lopsiensis n. sp. Mesezhnikov 1984
(2 measurements)
Aulacostephanus (Aulacostephanus) volgensis (Vischniakoff 1875)
(2 measurements)
Aulacostephanus (Pararasenia) subhibridus Mesezhnikov 1984
Zakharov et al. 2005
Aulacostephanus (Pararasenia) quenstedti (Durand 1933)
Zakharov et al. 2005
Cephalopoda - Goniatitida - Prionoceratidae
Amoeboceras (Nannocardioceras) sp. Hyatt 1900
Zakharov et al. 2005
Amoeboceras (Euprionoceras) sp. ()
Zakharov et al. 2005
Cephalopoda - Belemnitida
Simobelus (Simobelus) cf. breviaxis
Zakharov et al. 2005 very rare category
Pachyteuthis (Boreioteuthis) cf. troslayana
Zakharov et al. 2005 very rare category
Bivalvia - Pectinida - Entoliidae
Entolium demissum (Phillips 1835)
Zakharov et al. 2005 rare category
recombined as Entolium demissus
Bivalvia - Carditida - Astartidae
Astarte (Astarte) lopsiyaensis
Zakharov et al. 2005 frequent category
A. (A.) lopsiyaensis lopsiyaensis
Bivalvia - Pholadida - Pleuromyidae
Pleuromya sp. (Meek 1873)
Zakharov et al. 2005 very rare category
original and current combination Myacites (Pleuromya)
Bivalvia - Thraciida - Thraciidae
Thracia sp. Blainville 1824
Zakharov et al. 2005 very frequent category
Bivalvia - Nuculida - Nuculidae
Nuculoma sp. Cossmann 1907
Zakharov et al. 2005 very rare category
see common names

Geography
Country:Russian Federation State/province:Khanty-Mansi Autonomous Okrug
Coordinates: 62.5° North, 60.3° East (view map)
Paleocoordinates:58.5° North, 56.7° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Stage:Kimmeridgian 10 m.y. bin:Jurassic 5
Key time interval:Late/Upper Kimmeridgian Ammonoid zone: Aulacostephanus eudoxus
Age range of interval:152.20000 - 149.20000 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: Kimmeridgian Stage, Upper Substage, Aulacostephanus eudoxus Zone; thickness: 2.0 m
Lithology and environment
Primary lithology:gray,blue lithified claystone
Lithology description: Gray bluish plastic clays. At the bottom are flattened round concretions of gray clay limestone (to 1 m in diameter) with fauna.
Environment:open shallow subtidal
Geology comments: The explored Kimmeridgian section denuded along the Lopsiya River formed under the embayment conditions of an epicontinental West Siberian sea, covering the territory of more than 2 mln km^2. This Lyapinsky Bay was rather shallow and opened toward the NNE. The narrow band of the Uralian Peninsula seperated it from the Timon-Pechora Sea in the west, and the small Berezovsky Archipelago seperated it from the West Siberian Sea in the east.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:paleoecologic analysis
Collection method comments: Repository: VNIGRI
Metadata
Database number:58782
Authorizer:M. Aberhan, M. Clapham Enterer:S. Nurnberg, M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2006-02-24 04:51:45 Last modified:2014-11-30 00:24:53
Access level:the public Released:2006-02-24 04:51:45
Creative Commons license:CC BY
Reference information

Primary reference:
53547. M. S. Mesezhnikov. 1984. Kimeridzhskiy i Volzhskiy Yarusy Severa SSSR 1-224 [M. Clapham/M. Clapham]

Secondary references:

16680 V. A. Zakharov, F. Baudin, O. S. Dzyuba, V. Daux, K. V. Zverev and M. Renard. 2005. Isotopic and faunal record of high paleotemperatures in the Kimmeridgian of Subpolar Urals. Russian Geology and Geophysics 46(1):3-20 [M. Aberhan/S. Nurnberg]