Boyarka River, Homolsomites bojarkensis zone, Taymyr, Siberia: Late/Upper Valanginian - Early/Lower Hauterivian, Russian Federation
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Polyptychitidae
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Dichotomites cf. triptychoides
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Homolsomites bojarkensis
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unclassified
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Marginulina striatocostata
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| spelled with current rank as Cristellaria (Marginulina) | ||||||||||
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Marginulina pyramidalis
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| spelled with current rank as Cristellaria (Marginulina) | ||||||||||
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Marginulina aff. zaspelovae
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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 robusta
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| spelled with current rank as Cristellaria (Marginulina) | ||||||||||
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Marginulina ex gr. linearis
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| spelled with current rank as Cristellaria (Marginulina) | ||||||||||
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Marginulina turgida
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| spelled with current rank as Cristellaria (Marginulina) | ||||||||||
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Ammodiscidae
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Glomospirella gaultina
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Nodosariata
- Nodosariida
- Nodosariidae
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Tristix ex gr. excavatum
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Pseudonodosaria insueta
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Pseudonodosaria sp.
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Astacolus trigonius
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Astacolus suspectus
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Nodosaria incomes
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Nodosariata
- Polymorphinida
- Polymorphinidae
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Globulina chetaensis
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| subspecies berriassica | ||||||||||
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Globulina praelacrima
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Paradentalina sp.
Uchio 1960
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| synonym of Enantiodentalina | ||||||||||
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Nodosariata
- Vaginulinida
- Vaginulinidae
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Lenticulina novella
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Lenticulina oligostegia
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Lenticulina muensteri
Bartenstein and Brand 1937
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| synonym of Lenticulina munsteri | ||||||||||
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Ichthyolariidae
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Geinitzinita arctocretacea
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Lituolida
- Haplophragmoididae
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Haplophragmoides infracretacea
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| see common names | ||||||||||
Geography
| Country: | Russian Federation |
| Coordinates: | 70.5° North, 97.3° East (view map) |
| Paleocoordinates: | 70.4° North, 81.3° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Key time interval: | Late/Upper Valanginian - Early/Lower Hauterivian | ||
| Age range of interval: | 139.80000 - 125.77000 m.y. ago |
Stratigraphy
| Local section: | Boyarka River | Local bed: | 205-280 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Homolsomites bojarkensis zone | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Secondary lithology: | lithified siltstone |
| Lithology description: sandstone with concretions and clayey siltstone | |
| Environment: | coastal indet. |
| Geology comments: fairly shallow facies from the southernmost 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: | 65463 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | marine invertebrate,micropaleontology |
| Created: | 2006-09-22 08:34:18 | Last modified: | 2006-09-22 11:34:19 |
| Access level: | the public | Released: | 2006-09-22 08:34:17 |
| 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] |