Sample 11462, Amsterdamhoek railway cutting, Algoa Basin: Late/Upper Valanginian, South Africa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Ammodiscidae
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Ammodiscus sp.
Reuss 1862
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common category | ||||||
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Trochamminidae
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Trochammina sp.
Parker and Jones 1859
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few category | ||||||
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Lituolida
- Lituolidae
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? Dorothia sp.
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few category | ||||||
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Ammobaculites sp.
Cushman 1910
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frequent category | ||||||
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Ammobaculites subaequalis
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common category | ||||||
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Ammobaculites informal sp. B
Cushman 1910
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few category | ||||||
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Ammobaculites informal sp. A
Cushman 1910
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rare category | ||||||
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Lituolida
- Haplophragmoididae
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Haplophragmoides sp.
Cushman 1910
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abundant category | ||||||
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Haplophragmoides informal sp. B
Cushman 1910
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frequent category | ||||||
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Haplophragmoides informal sp. C
Cushman 1910
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few category | ||||||
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Haplophragmoides informal sp. A
Cushman 1910
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common category | ||||||
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Nodosariata
- Polymorphinida
- Polymorphinidae
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Globulina prisca sensu lato
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frequent category | ||||||
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Eoguttulina sp.
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rare category | ||||||
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Eoguttulina informal sp. B
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rare category | ||||||
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Eoguttulina anglica sensu lato
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rare category | ||||||
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Bullopora laevis
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rare category | ||||||
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Nodosariata
- Robertinida
- Ceratobuliminidae
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Reinholdella hofkeri
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rare category | ||||||
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Nodosariata
- Robertinida
- Epistominidae
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Epistomina caracolla sensu lato
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abundant category | ||||||
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Nodosariata
- Vaginulinida
- Vaginulinidae
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Lenticulina nodosa sensu lato
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common category | ||||||
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Lenticulina sp.
Lamarck 1804
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few category | ||||||
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Nodosariata
- Vaginulinida
- Lagenidae
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Lingulina bettenstaedti
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rare category | ||||||
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Lingulina mngazanaensis
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rare category | ||||||
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Lingulina cf. furcillata
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rare category | ||||||
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Lingulina sp.
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common category | ||||||
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Nodosariata
- Nodosariida
- Nodosariidae
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Dentalina communis sensu lato
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few category | ||||||
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Dentalina sp.
d'Orbigny 1826
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common category | ||||||
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Dentalina linearis
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few category | ||||||
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Lagena sp.
Walker and Boys 1784
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rare category | ||||||
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Planularia madagascariensis sensu lato
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rare category | ||||||
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Citharina austroafricana
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common category | ||||||
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Nodosaria grisbrooki
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few category | ||||||
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Nodosaria sp.
Lamarck 1812
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rare category | ||||||
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Nodosaria tomaszowiensis
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few category | ||||||
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Astacolus gibber
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rare category | ||||||
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Astacolus explicatus sensu lato
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rare category | ||||||
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Astacolus sp.
de Montfort 1808
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few category | ||||||
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Astacolus calliopsis sensu lato
Reuss 1863
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few category | ||||||
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unclassified
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Ammoglobigerina cf. globigeriniformis
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few category | ||||||
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Tubothalamea
- Miliolida
- Cornuspiridae
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Cornuspira orbicula
Terquem and Berthelin 1875
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rare category | ||||||
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Tubothalamea
- Miliolida
- Hauerinidae
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Quinqueloculina sp.
d'Orbigny 1826
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few category | ||||||
| see common names | |||||||
Geography
| Country: | South Africa |
| Coordinates: | 33.8° South, 25.6° East (view map) |
| Paleocoordinates: | 45.2° South, 11.8° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | hand sample |
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
| Formation: | Sundays River | ||||
| Regional section: | Algoa Basin | Regional bed: | 11462 | ||
| Regional order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: This reference: Biozone Bb: Sculptobaculites goodlandensis Zone (PArtial Range Zone); Foraminifera Zone 6/7 - Epistomia caracolla/Interzone (Venter 1972); basal Sundays River Fm | |||||
Lithology and environment
| Primary lithology: | fine,gray lithified claystone |
| Lithology description: fine gray claystone, some bivalve shell, no lignite | |
| Environment: | offshore |
| Geology comments: diversity of foraminifera and presence of small numbers of radiolaria suggest an outer-shelf to uppermost slope environment | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | microfossils |
| Abundance in sediment: | abundant |
Collection methods and comments
| Collection excludes: | some microfossils | ||
| Collection methods: | bulk,chemical,survey of museum collection | ||
| 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; all specimens have been deposited in the collections of the South African Museum, Cape Town, catalogue 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: | 70541 | ||
| Authorizer: | W. Kiessling | Enterer: | T. Schossleitner |
| Modifier: | M. Clapham | Research group: | micropaleontology |
| Created: | 2007-03-28 06:56:08 | Last modified: | 2024-03-01 15:25:03 |
| Access level: | the public | Released: | 2007-03-28 06:56:08 |
| 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] |