Cape Urdyuk-Khaya-5 (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: Hectoroceras kochi zone, X Member, Berriasian (145.0 - 139.8 Ma)

• exposure 33, layer 23-27; exposure 32, layers 16-18; exposure 31, layers 1a-2

• member-level stratigraphic resolution

Environment/lithology: marine; burrowed, pyritic, gray shale

• pyrite nodules, siderite grains, and small limestone concretions are present

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 2479: 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
Foraminifera
 Ammodiscoidea - Ammodiscidae
Glomospirella intrita
 Trochamminacea - Trochamminidae
Trochammina parviloculata
 Lituolacea - Ammosphaeroidinidae
Recurvoides obskiensis
  -
"Marginulina pyramidalis" = Cristellaria (Marginulina)
"Marginulina pyramidalis" = Cristellaria (Marginulina)
 Lituolida - Haplophragmoididae
ex gr. Haplophragmoides emeljanzevi, Haplophragmoides schleiferi
ex gr. Haplophragmoides emeljanzevi
originally entered as "Haplophragmoides ex gr. emeljanzevi"
 Lituolida - Lituolidae
Gaudryina gerkei
Nodosariata
 Vaginulinida - Vaginulinidae
? Saracenaria vermis, Lenticulina modica, Lenticulina sp.
? Saracenaria vermis
originally entered as "Saracenaria? vermis"
Lenticulina sp. Lamarck 1804
originally entered as "Lenticulina spp."
Cephalopoda
 Ammonitida - Polyptychitidae
Hectoroceras kochi, Praetollia maynci, aff. Praetollia maynci, Praetollia contigua, Praetollia sp., Subcraspedites sp., Surites sp.
Hectoroceras kochi Spath 1947 ammonite
aff. Praetollia maynci ammonite
originally entered as "Praetollia aff. maynci"
Praetollia contigua ammonite
Praetollia maynci var. contigua
Praetollia sp. ammonite
Subcraspedites sp. Spath 1924 ammonite
Surites sp. Sazonov 1951 ammonite
originally entered as "Surites sp."
Bivalvia
 Nuculida - Nuculidae
Nucula sp.
Nucula sp. Lamarck 1799 nut clam
 Pectinida - Limidae
Lima sp.
Lima sp. Bruguière 1797 file clam
 Pectinida - Buchiidae
cf. Buchia unschensis, Buchia sp., Buchia sp., aff. Buchia robusta, cf. Buchia okensis, aff. Buchia uncitoides, cf. Buchia terebratuloides, Buchia volgensis
cf. Buchia unschensis scallop
originally entered as "Buchia cf. unschensis"
Buchia sp. Rouillier 1845 scallop
Buchia sp. Rouillier 1845 scallop
"sp. juv." - originally entered as "Buchia sp. juv."
aff. Buchia robusta scallop
originally entered as "Buchia aff. robusta"
cf. Buchia okensis Pavlow 1907 scallop
originally entered as "Buchia cf. okensis"
aff. Buchia uncitoides Pavlow 1907 scallop
originally entered as "Buchia aff. uncitoides"
cf. Buchia terebratuloides Lahusen 1888 scallop
originally entered as "Buchia cf. terebratuloides"
Buchia volgensis Lahusen 1888 scallop
 Pectinida - Oxytomidae
cf. Oxytoma arcticostata
cf. Oxytoma arcticostata scallop
originally entered as "Oxytoma cf. arcticostata"
 Pectinida - Pectinoidae
cf. Camptonectes lens, ? Aequipecten arachnoideus
cf. Camptonectes lens Sowerby 1818 scallop
originally entered as "Camptonectes cf. lens"
? Aequipecten arachnoideus scallop
originally entered as "Aequipecten? arachnoideus"
Malacostraca
 Decapoda -
Decapoda indet.
Decapoda indet. Latreille 1802 decapod