Cape Urdyuk-Khaya-4 (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: Chetaites sibiricus zone, IX Member, Berriasian (145.0 - 139.8 Ma)

• exposure 33, layers 18-22; exposure 32, layers 11-15

• member-level stratigraphic resolution

Environment/lithology: marine; gray shale

• lithology includes small loaf-shaped concretions of calcareous phosphorite, phosphate limestone, and clayey siderite with organic matter; a thin sheet of dense calcareous phosphorite is present in the base of the member, passing into phosphate limestone toward the roof and base

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 2478: authorized by Mark Patzkowsky, entered by Karen Layou on 06.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Nodosariata
 Nodosariida - Nodosariidae
? Dentalina sp.
? Dentalina sp. d'Orbigny 1826
originally entered as "Dentalina? sp."
 Vaginulinida - Vaginulinidae
? Saracenaria vermis, Lenticulina sossipatrovae, cf. Lenticulina pseudoarctica
? Saracenaria vermis
originally entered as "Saracenaria? vermis"
cf. Lenticulina pseudoarctica
originally entered as "Lenticulina cf. pseudoarctica"
Foraminifera
 Trochamminacea - Trochamminidae
Trochammina parviloculata, Trochammina septentrionalis, ex gr. Trochammina polymera, Trochammina rosaceaformis
ex gr. Trochammina polymera
originally entered as "Trochammina ex gr. polymera"
 Lituolacea - Ammosphaeroidinidae
Recurvoides paucus, Recurvoides obskiensis
  -
"Marginulina subformosa" = Cristellaria (Marginulina), "Marginulina striatocostata" = Cristellaria (Marginulina)
"Marginulina subformosa" = Cristellaria (Marginulina)
"Marginulina striatocostata" = Cristellaria (Marginulina)
 Lituolida - Haplophragmoididae
Haplophragmoides emeljanzevi, Haplophragmoides schleiferi, Haplophragmoides fimbriatus
 Lagenina - Ichthyolariidae
cf. Geinitzinita arctocretacea
cf. Geinitzinita arctocretacea
originally entered as "Geinitzinita cf. arctocretacea"
Malacostraca
 Decapoda -
Decapoda indet.
Decapoda indet. Latreille 1802 decapod
Bivalvia
 Pectinida - Buchiidae
Buchia sp., cf. Buchia okensis, cf. Buchia terebratuloides, ex gr. Buchia volgensis, cf. Buchia volgensis
Buchia sp. Rouillier 1845 scallop
"sp. juv." - originally entered as "Buchia sp. juv."
cf. Buchia okensis Pavlow 1907 scallop
originally entered as "Buchia cf. okensis"
cf. Buchia terebratuloides Lahusen 1888 scallop
originally entered as "Buchia cf. terebratuloides"
ex gr. Buchia volgensis Lahusen 1888 scallop
originally entered as "Buchia ex gr. volgensis"
cf. Buchia volgensis Lahusen 1888 scallop
originally entered as "Buchia cf. volgensis"
 Pectinida - Oxytomidae
cf. Oxytoma arcricostata
cf. Oxytoma arcricostata scallop
originally entered as "Oxytoma cf. arcricostata"
 Pectinida - Limidae
Lima sp.
Lima sp. Bruguière 1797 file clam
 Pectinida - Pectinoidae
? Aequipecten arachnoideus
? Aequipecten arachnoideus scallop
originally entered as "Aequipecten? arachnoideus"
 Nuculida - Nuculidae
Nucula sp.
Nucula sp. Lamarck 1799 nut clam
Cephalopoda
 Belemnitida - Cylindroteuthididae
Lagonibelus superelongatus, Lagonibelus elongatus
 Belemnitida - Belemnitidae
Cylindroteuthis porrectiformis
Cylindroteuthis porrectiformis Anderson 1945 belemnite
 Ammonitida - Polyptychitidae
Praetollia maynci, Praetollia contigua, ? Subcraspedites sp., Subcraspedites sp., Subcraspedites bodylevskii, Craspedites sp., ? Craspedites sp.
Praetollia contigua ammonite
Praetollia maynci var. contigua
? Subcraspedites sp. Spath 1924 ammonite
originally entered as "Subcraspedites? sp."
Subcraspedites sp. Spath 1924 ammonite
Craspedites sp. ammonite
? Craspedites sp. ammonite
originally entered as "Craspedites? sp."
 Ammonitida - Perisphinctidae
? Chetaites sp.
? Chetaites sp. Shul'gina 1962 ammonite
originally entered as "Chetaites? sp."