Cape Urdyuk-Khaya-8 (Cretaceous of Russian Federation)

Where: Siberia, Russian Federation (73.0° N, 113.0° E: paleocoordinates 75.5° N, 91.9° E)

• outcrop-level geographic resolution

When: Surites analogus zone, XII Member, Berriasian (145.0 - 139.8 Ma)

• exposure 33, layers 31-36

• member-level stratigraphic resolution

Environment/lithology: marine; gray, silty claystone

• lithology includes numerous intercalations of lens-like concretions of clayey limestone

Size class: macrofossils

Primary reference: V. N. Saks, ed. 1975. The Jurassic-Cretaceous Boundary and the Berriasian Stage in the Boreal Realm. 1-319 [M. Patzkowsky/K. Layou/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2482: authorized by Mark Patzkowsky, entered by Karen Layou on 06.07.1999, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

• trace fossils include "galleries of mud eaters"
Show authors, comments, and common names
Cephalopoda
 Ammonitida - Polyptychitidae
cf. Subcraspedites subpressulus, Subcraspedites sp., Surites sp.
cf. Subcraspedites subpressulus ammonite
originally entered as "Subcraspedites cf. subpressulus"
Subcraspedites sp. Spath 1924 ammonite
originally entered as "Subcraspedites spp."
Surites sp. Sazonov 1951 ammonite
originally entered as "Surites sp."
Bivalvia
 Nuculida - Nuculidae
Nucula sp.
Nucula sp. Lamarck 1799 nut clam
 Pectinida - Buchiidae
Buchia sp., cf. Buchia volgensis, ex gr. Buchia volgensis
Buchia sp. Rouillier 1845 scallop
cf. Buchia volgensis Lahusen 1888 scallop
originally entered as "Buchia cf. volgensis"
ex gr. Buchia volgensis Lahusen 1888 scallop
originally entered as "Buchia ex gr. volgensis"
Foraminifera
 Ammodiscoidea - Ammodiscidae
Glomospirella intrita, Ammodiscus sp.
Ammodiscus sp. Reuss 1862
 Trochamminacea - Trochamminidae
Trochammina parviloculata, ex gr. Trochammina rosaceaformis
ex gr. Trochammina rosaceaformis
originally entered as "Trochammina ex gr. rosaceaformis"
 Lituolacea - Ammosphaeroidinidae
Recurvoides obskiensis
  -
"ex gr. Marginulina robusta" = Cristellaria (Marginulina), "aff. Marginulina subformosa" = Cristellaria (Marginulina)
"ex gr. Marginulina robusta" = Cristellaria (Marginulina)
originally entered as "Marginulina ex gr. robusta"
"aff. Marginulina subformosa" = Cristellaria (Marginulina)
originally entered as "Marginulina aff. subformosa"
 Lagenina - Ichthyolariidae
Geinitzinita intercolaris
Geinitzinita intercolaris
Geinitzinita arcrocretacea intercolaris
 Lituolida - Lituolidae
Ammobaculites gerkei, Gaudryina gerkei
 Lituolida - Haplophragmoididae
Haplophragmoides emeljanzevi
Nodosariata
 Vaginulinida - Vaginulinidae
Lenticulina sossipatrovae, Lenticulina gudinae
Foraminifera
  -
? Orietalia baccula
? Orietalia baccula
originally entered as "Orientalia? baccula"