Paksa Peninsula, Polyptychites polyptychus zone, Yakutia, Siberia: Late/Upper Valanginian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Isthmocystis distincta
Gochteodinia villosa
Lagenorhytis delicatula
Gongylodinium acineum
Cephalopoda - Ammonitida - Polyptychitidae
Dichotomites sp. Koenen 1909
Polyptychites ex gr. polyptychus (Keyserling 1846)
Nodosariata - Vaginulinida - Vaginulinidae
Lenticulina sp. Lamarck 1804
Lenticulina ex gr. macrodisca
Lenticulina ex gr. muensteri Bartenstein and Brand 1937
synonym of Lenticulina munsteri
Lituolida - Lituolidae
Ammobaculites artutus
Lituolida - Haplophragmoididae
Cribrostomoides sinnosus
Cribrostomoides infracretaceus
Haplophragmoides concavoides
Hemisphaeramminidae
Crithionina sp. Goës 1894
Ammosphaeroidinidae
Recurvoides paucus
Ammodiscidae
Glomospira ex gr. arctica
Ammodiscus nuceus
Ichthyolariidae
Geinitzinita arctocretacea
unclassified
Marginulina pyramidalis
spelled with current rank as Cristellaria (Marginulina)
Orietalia ex gr. baccula
listed as Orientalia
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites sp. Potonie and Gelletich 1933
Dinophyceae - Gonyaulacales
Dingodinium ex gr. tuberosum
Dinophyceae - Gonyaulacales - Gonyaulacaceae
Scriniodinium pharo
aff. Perisseiasphaeridium sp. Davey and Williams 1966
listed as Perisseiasphaeridinium
Gonyaulacysta cretacea
Hystrichodinium ex gr. pulchrum Deflandre 1935
Sirmiodinium grossii Alberti 1961
Tubotuberella apatela Ioannides et al. 1977
listed as Tubotubella
Occisucysta tensorium
Oligosphaeridium complex Davey and Williams 1966
Cribroperidinium cf. spinoreticulatum
Dinophyceae - Gonyaulacales
Cleistosphaeridium sp. Davey 1966
sp. B
Tanyosphaeridium ex gr. variecalamus
Dinophyceae - Gonyaulacales - Areoligeraceae
Cyclonephelium cuculliforme
Circulodinium compta
Dinophyceae - Gonyaulacales
Valensiella ex gr. ovula
Dinophyceae
Trichodinium speetonense
Apteodinium sp. Eisenack 1958
sp. A
Dinophyceae - Pareodiniaceae
Pareodinia borealis
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:Late/Upper Valanginian
Age range of interval:139.80000 - 132.60000 m.y. ago
Stratigraphy
Stratigraphic resolution:group of beds
Stratigraphy comments: Polyptychites polyptychus zone
Lithology and environment
Primary lithology: lithified siltstone
Lithology description: clayey siltstone with concretions, 19.5 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:65751
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:marine invertebrate,micropaleontology
Created:2006-09-25 03:43:40 Last modified:2006-09-25 06:43:40
Access level:the public Released:2006-09-25 03:43:38
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]