Paksa Peninsula, Polyptychites michalskii zone, Yakutia, Siberia (Cretaceous of Russian Federation)

Where: Russian Federation (73.9° N, 112.9° E)

• Paleocoordinates: 71.7° N, 76.6° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Early/Lower Valanginian (137.1 - 132.6 Ma)

• Polyptychites michalskii zone

• group of beds-level stratigraphic resolution

Environment/lithology: deep-water; lithified siltstone

• relatively deep water environments in the central part of the Khatanga Basin
• clayey siltstone with concretions, 40.8 m thick

Size classes: macrofossils, microfossils

Primary reference: N. I. Shulgina, M. D. Burdykina, V. A. Basov and N. Arhus. 1994. Distribution of ammonites, foraminifera and dinoflagellate cysts in the Lower Cretaceous reference sections of the Khatanga Basin, and Boreal Valanginian biogeography. Cretaceous Research 15(1):1-16 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 65748: authorized by Wolfgang Kiessling, entered by Uta Merkel on 25.09.2006

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Isthmocystis distincta, Lagenorhytis delicatula
Foraminifera
  -
Orietalia ex gr. baccula, "Marginulina turgida" = Cristellaria (Marginulina), "Marginulina corneola" = Cristellaria (Marginulina), "Marginulina striatocostata" = Cristellaria (Marginulina)
Orietalia ex gr. baccula
listed as Orientalia
"Marginulina turgida" = Cristellaria (Marginulina)
"Marginulina corneola" = Cristellaria (Marginulina)
"Marginulina striatocostata" = Cristellaria (Marginulina)
 Ammodiscoidea - Ammodiscidae
Glomospirella ex gr. gaultina, Glomospira ex gr. arctica, Ammodiscus nuceus, Ammodiscus mackenziensis
 Astrorhizacea - Hemisphaeramminidae
Crithionina sp.
Crithionina sp. Goës 1894
 Lituolacea - Ammosphaeroidinidae
Recurvoides obskiensis, Recurvoides dubrovskajae
 Lituolida - Lituolidae
Gaudryina gerkei
 Lituolida - Haplophragmoididae
Haplophragmoides concavoides, Haplophragmoides votubilis, Cribrostomoides sinnosus, Cribrostomoides infracretaceus, Cribrostomoides romanovae
 Lituolida - Trochamminidae
Trochammina parviloculata
Nodosariata
 Vaginulinida - Vaginulinidae
Lenticulina nivalis
 Polymorphinida - Polymorphinidae
Globulina praelacrima
 Nodosariida - Nodosariidae
Astacolus suspectus
Dinophyceae
  -
Trichodinium speetonense
 Gonyaulacales -
Dingodinium ex gr. tuberosum, Cleistosphaeridium sp., Chlamydophorella sp., Valensiella ex gr. ovula
Cleistosphaeridium sp. Davey 1966
sp. B
Chlamydophorella sp. Cookson and Eisenack 1958
 Gonyaulacales - Gonyaulacaceae
Gonyaulacysta fastigiata, cf. Leptodinium hyalodermopse, Hystrichodinium ex gr. pulchrum, Avellodinium sp., Sirmiodinium grossii, Cribroperidinium cf. spinoreticulatum, Oligosphaeridium cf. poculum, Tubotuberella apatela, aff. Perisseiasphaeridium sp., Sentusidinium sp.
Avellodinium sp. Blackhouse 1988
Sirmiodinium grossii Alberti 1961
Tubotuberella apatela Ioannides et al. 1977
listed as Tubotubella
aff. Perisseiasphaeridium sp. Davey and Williams 1966
listed as Perisseiasphaeridinium
Sentusidinium sp. Sarjeant and Stover 1978
 Gonyaulacales -
Tanyosphaeridium ex gr. variecalamus
 Gonyaulacales - Areoligeraceae
Circulodinium compta, Cyclonephelium cuculliforme
Polypodiopsida
 Schizaeales - Polypodiidae
Cicatricosisporites sp.
Cicatricosisporites sp. Potonie and Gelletich 1933
Cephalopoda
 Ammonitida - Polyptychitidae
Dichotomites sp., "Neopolyptychites sp." = Polyptychites (Euryptychites), "Polyptychites ex gr. michalskii" = Polyptychites (Polyptychites) michalskii, "Astieriptychites sp." = Polyptychites (Astieriptychites)
Dichotomites sp. Koenen 1909 ammonite
"Neopolyptychites sp." = Polyptychites (Euryptychites) Pavlow 1914 ammonite
"Polyptychites ex gr. michalskii" = Polyptychites (Polyptychites) michalskii Bogoslowsky 1902 ammonite
"Astieriptychites sp." = Polyptychites (Astieriptychites) Bodylevsky 1960 ammonite