Paksa Peninsula, Polyptychites michalskii zone, Yakutia, Siberia: Early/Lower Valanginian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Isthmocystis distincta
Lagenorhytis delicatula
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites sp. Potonie and Gelletich 1933
Trochamminidae
Trochammina parviloculata
Hemisphaeramminidae
Crithionina sp. Goës 1894
Ammosphaeroidinidae
Recurvoides obskiensis
Recurvoides dubrovskajae
Ammodiscidae
Glomospirella ex gr. gaultina
Glomospira ex gr. arctica
Ammodiscus nuceus
Ammodiscus mackenziensis
unclassified
Orietalia ex gr. baccula
listed as Orientalia
Marginulina turgida
spelled with current rank as Cristellaria (Marginulina)
Marginulina corneola
spelled with current rank as Cristellaria (Marginulina)
Marginulina striatocostata
spelled with current rank as Cristellaria (Marginulina)
Lituolida - Haplophragmoididae
Cribrostomoides sinnosus
Cribrostomoides infracretaceus
Cribrostomoides romanovae
Haplophragmoides concavoides
Haplophragmoides votubilis
Lituolida - Lituolidae
Gaudryina gerkei
Nodosariata - Vaginulinida - Vaginulinidae
Lenticulina nivalis
Nodosariata - Polymorphinida - Polymorphinidae
Globulina praelacrima
Nodosariata - Nodosariida - Nodosariidae
Astacolus suspectus
Cephalopoda - Ammonitida - Polyptychitidae
Astieriptychites sp. Bodylevsky 1960
spelled with current rank as Polyptychites (Astieriptychites)
Neopolyptychites sp. Shulgina 1983
synonym of Polyptychites (Euryptychites)
Polyptychites ex gr. michalskii Bogoslowsky 1902
recombined as Polyptychites (Polyptychites) michalskii
Dichotomites sp. Koenen 1909
Dinophyceae - Gonyaulacales - Areoligeraceae
Cyclonephelium cuculliforme
Circulodinium compta
Dinophyceae - Gonyaulacales - Gonyaulacaceae
Sirmiodinium grossii Alberti 1961
Sentusidinium sp. Sarjeant and Stover 1978
cf. Leptodinium hyalodermopse
Avellodinium sp. Blackhouse 1988
Oligosphaeridium cf. poculum Jain 1977
Gonyaulacysta fastigiata Duxbury 1977
Tubotuberella apatela Ioannides et al. 1977
listed as Tubotubella
aff. Perisseiasphaeridium sp. Davey and Williams 1966
listed as Perisseiasphaeridinium
Hystrichodinium ex gr. pulchrum Deflandre 1935
Cribroperidinium cf. spinoreticulatum
Dinophyceae - Gonyaulacales
Tanyosphaeridium ex gr. variecalamus
Cleistosphaeridium sp. Davey 1966
sp. B
Valensiella ex gr. ovula
Dingodinium ex gr. tuberosum
Chlamydophorella sp. Cookson and Eisenack 1958
Dinophyceae
Trichodinium speetonense
see common names

Geography
Country:Russian Federation
Coordinates: 73.9° North, 112.9° East (view map)
Paleocoordinates:76.0° North, 89.8° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Valanginian 10 m.y. bin:Cretaceous 1
Key time interval:Early/Lower Valanginian
Age range of interval:139.80000 - 132.60000 m.y. ago
Stratigraphy
Stratigraphic resolution:group of beds
Stratigraphy comments: Polyptychites michalskii zone
Lithology and environment
Primary lithology: lithified siltstone
Lithology description: clayey siltstone with concretions, 40.8 m thick
Environment:deep-water indet.
Geology comments: relatively deep water environments in the central part of the Khatanga Basin
Taphonomy
Size of fossils:macrofossils,microfossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:65748
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:marine invertebrate,micropaleontology
Created:2006-09-25 02:48:25 Last modified:2006-09-25 05:48:25
Access level:the public Released:2006-09-25 02:48:24
Creative Commons license:CC BY
Reference information

Primary reference:
18860. 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]