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