Cape Urdyuk-Khaya-1 (Jurassic of Russian Federation)

Where: Siberia, Russian Federation (73.0° N, 113.0° E: paleocoordinates 76.0° N, 91.7° E)

• outcrop-level geographic resolution

When: Craspedites okensis zone, VI Member, Tithonian (152.1 - 145.0 Ma)

• exposure 33, layers 10-14 and exposure 32, layers 3-7

Environment/lithology: marine; pyritic, silty, carbonaceous shale

• lithology described as alternating thinnly-laminated, platy clays alternating dark grey, brownish grey and bluish grey; intercalations of lenslike and loaf-shaped concretions of an almost black pelitomorphic calcareous phosphatic substance 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 2475: 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
Foraminifera
 Trochamminacea - Trochamminidae
Trochammina rosacea, Trochammina septentrionalis
 Lituolacea - Ammosphaeroidinidae
ex gr. Recurvoides obskiensis
ex gr. Recurvoides obskiensis
originally entered as "Recurvoides ex gr. obskiensis"
 Textulariina - Hyperamminidae
aff. Hyperammina aptica
aff. Hyperammina aptica
originally entered as "Hyperammina aff. aptica"
 Ammodiscoidea - Ammodiscidae
Ammodiscus veteranus
 Lituolida - Lituolidae
ex gr. Gaudryina gerkei, Ammobaculites sp.
ex gr. Gaudryina gerkei
originally entered as "Gaudryina ex gr. gerkei"
Ammobaculites sp. Cushman 1910
 Lituolida - Haplophragmoididae
Haplophragmoides emeljanzevi, Haplophragmoides schleiferi, Haplophragmoides volossatovi
Nodosariata
 Vaginulinida - Vaginulinidae
? Saracenaria vermis, aff. Lenticulina sossipatrovae
? Saracenaria vermis
originally entered as "Saracenaria? vermis"
aff. Lenticulina sossipatrovae
originally entered as "Lenticulina aff. sossipatrovae"
 Nodosariida - Nodosariidae
Planularia pressula
Foraminifera
 Lagenina - Ichthyolariidae
Geinitzinita intercolaris
Geinitzinita intercolaris
Geinitzinita arctocretacea intercolaris
  -
"aff. Marginulina impropia" = Cristellaria (Marginulina)
"aff. Marginulina impropia" = Cristellaria (Marginulina)
originally entered as "Marginulina aff. impropia"
Cephalopoda
 Ammonitida - Lytoceratidae
Lytoceras sp.
Lytoceras sp. Suess 1865 ammonite
 Ammonitida - Perisphinctidae
Virgatosphinctes sp.
Virgatosphinctes sp. Uhlig 1910 ammonite
 Ammonitida - Polyptychitidae
cf. Craspedites okensis
cf. Craspedites okensis ammonite
originally entered as "Craspedites cf. okensis"
 Belemnitida -
Pachyteuthis apiculata
Pachyteuthis apiculata belemnite
originally entered as "Pachuteuthis apiculata"
 Belemnitida - Belemnitidae
Cylindroteuthis comes, Cylindroteuthis porrectiformis
Cylindroteuthis porrectiformis Anderson 1945 belemnite
Bivalvia
 Pectinida - Limidae
Lima sp., "cf. Lima consobrina" = Lima (Limatula) consobrina
Lima sp. Bruguière 1797 file clam
"cf. Lima consobrina" = Lima (Limatula) consobrina d'Orbigny 1845 file clam
originally entered as "Lima cf. consobrina"
 Pectinida - Buchiidae
cf. Buchia subinflata, Buchia sp., Buchia fischeriana
cf. Buchia subinflata scallop
originally entered as "Buchia cf. subinflata"
Buchia sp. Rouillier 1845 scallop
Buchia fischeriana d'Orbigny 1845 scallop
 Pectinida - Pectinoidae
? Aequipecten arachnoideus
? Aequipecten arachnoideus scallop
originally entered as "Aequipecten? arachnoideus"
Malacostraca
 Decapoda -
Decapoda indet.
Decapoda indet. Latreille 1802 decapod