Sample 11997, Colchester Cliff, Algoa Basin: Late/Upper Hauterivian, South Africa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Trochamminidae
|
|||||||
|
Trochammina sp.
Parker and Jones 1859
|
rare category | ||||||
|
Trochammina cf. inflata
Montagu 1803
|
rare category | ||||||
|
Lituolida
- Haplophragmoididae
|
|||||||
|
Haplophragmoides informal sp. B
Cushman 1910
|
rare category | ||||||
|
Haplophragmoides sp.
Cushman 1910
|
few category | ||||||
|
Lituolida
- Lituolidae
|
|||||||
|
Ammobaculites sp.
Cushman 1910
|
rare category | ||||||
|
Nodosariata
- Vaginulinida
- Lagenidae
|
|||||||
|
Lingulina cf. furcillata
|
rare category | ||||||
|
Nodosariata
- Polymorphinida
- Polymorphinidae
|
|||||||
|
Eoguttulina cf. inovroclaviensis
|
rare category | ||||||
|
Globulina prisca sensu lato
|
few category | ||||||
|
Nodosariata
- Nodosariida
- Nodosariidae
|
|||||||
|
Dentalina communis sensu lato
|
rare category | ||||||
| see common names | |||||||
Geography
| Country: | South Africa |
| Coordinates: | 33.7° South, 25.8° East (view map) |
| Paleocoordinates: | 46.0° South, 10.9° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | hand sample |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Hauterivian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Late/Upper Hauterivian | ||
| Age range of interval: | 132.60000 - 125.77000 m.y. ago |
Stratigraphy
| Formation: | Sundays River | ||||
| Regional section: | Algoa Basin | Regional bed: | 11997 | ||
| Regional order: | no particular order | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: This reference: Biozone IV: Pseudomorphina cholchesterensis Zone (Total Range Zone); Foraminifera Zone 3 - Eoguttulina Zone (Venter 1972); top Sundays River Fm | |||||
Lithology and environment
| Primary lithology: | fine,gray lithified claystone |
| Lithology description: fine gray claystone, no shell, very rare lignite | |
| Environment: | offshore |
| Geology comments: outer shelf and uppermost slope environment | |
Taphonomy
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | abundant |
Collection methods and comments
| Collection excludes: | some microfossils | ||
| Collection methods: | bulk,chemical,sieve | ||
| Minimum sieve size: | 0.106 | Maximum sieve size: | 0.500 |
| Rock censused: | 250 g | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collection method comments: samples were collected by I.R. McLachlan and C. Reabow; all specimens have been deposited in the collections of the South African Museum, Cape Town, catalouge numbers prefixed SAM-PQ-MF; original assemblage slides housed in the microfossil slide collections in SOEKOR (Pty) Ltd., in Parow, Cape Town. | |||
| Taxonomic list comments:No of specimens: abundant: 50+; frequent: 16-49; common: 6-15; few: 3-5; rare: 1-2 | |||
Metadata
| Database number: | 70688 | ||
| Authorizer: | W. Kiessling | Enterer: | T. Schossleitner |
| Modifier: | J. Alroy | Research group: | micropaleontology |
| Created: | 2007-04-03 05:20:53 | Last modified: | 2008-05-24 13:31:02 |
| Access level: | the public | Released: | 2007-04-03 05:20:52 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23576. | I.K. McMillan. 2003. The Foraminifera of the Late Valangian to Hautverian (Early Cretaceous) Sundays River Formation of the Algoa Basin, Eastern Cape Province, South Africa. Annals of the South African Museum 106:1-274 [W. Kiessling/T. Schossleitner] |