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