Sample 11462, Amsterdamhoek railway cutting, Algoa Basin (Cretaceous of South Africa)

Where: South Africa (33.8° S, 25.6° E)

• Paleocoordinates: 51.4° S, 7.5° W (Wright 2013)

• coordinate stated in text

• hand sample-level geographic resolution

When: Sundays River Formation, Late/Upper Valanginian (140.2 - 136.4 Ma)

• This reference: Biozone Bb: Sculptobaculites goodlandensis Zone (PArtial Range Zone); Foraminifera Zone 6/7 - Epistomia caracolla/Interzone (Venter 1972); basal Sundays River Fm

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, fine-grained, gray claystone

• diversity of foraminifera and presence of small numbers of radiolaria suggest an outer-shelf to uppermost slope environment
• fine gray claystone, some bivalve shell, no lignite

Size class: microfossils

Collection methods: bulk, chemical,

• 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.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 70541: authorized by Wolfgang Kiessling, entered by Thomas Schossleitner on 28.03.2007

Creative Commons license: CC0 (CC0)

Taxonomic list

• No of specimens: abundant: 50+; frequent: 16-49; common: 6-15; few: 3-5; rare: 1-2
Show authors, comments, and common names
Foraminifera
 Lituolida - Lituolidae
Ammobaculites sp., Ammobaculites subaequalis, Ammobaculites "sp. B", Ammobaculites "sp. A", ? Dorothia sp.
Ammobaculites sp. Cushman 1910
Ammobaculites "sp. B" Cushman 1910
Ammobaculites "sp. A" Cushman 1910
 Lituolida - Haplophragmoididae
Haplophragmoides sp., Haplophragmoides "sp. B", Haplophragmoides "sp. C", Haplophragmoides "sp. A"
Haplophragmoides sp. Cushman 1910
Nodosariata
 Vaginulinida - Lagenidae
Lingulina bettenstaedti, Lingulina mngazanaensis, Lingulina cf. furcillata, Lingulina sp.
 Vaginulinida - Vaginulinidae
Lenticulina sensu lato nodosa, Lenticulina sp.
Lenticulina sp. Lamarck 1804
 Nodosariida - Nodosariidae
Lagena sp., Astacolus gibber, Astacolus sensu lato explicatus, Astacolus sp., Astacolus sensu lato calliopsis, Dentalina sensu lato communis, Dentalina sp., Dentalina linearis, Planularia sensu lato madagascariensis, Nodosaria grisbrooki, Nodosaria sp., Nodosaria tomaszowiensis, Citharina austroafricana
Lagena sp. Walker and Boys 1784
Astacolus sp. de Montfort 1808
Dentalina sp. d'Orbigny 1826
Nodosaria sp. Lamarck 1812
 Polymorphinida - Polymorphinidae
Eoguttulina sp., Eoguttulina "sp. B", Eoguttulina sensu lato anglica, Globulina sensu lato prisca, Bullopora laevis
 Robertinida - Ceratobuliminidae
Reinholdella hofkeri
 Robertinida - Epistominidae
Epistomina sensu lato caracolla
Tubothalamea
 Miliolida - Hauerinidae
Quinqueloculina sp.
Quinqueloculina sp. d'Orbigny 1826
 Miliolida - Cornuspiridae
Cornuspira orbicula
Cornuspira orbicula Terquem and Berthelin 1875
Foraminifera
 Trochamminacea - Trochamminidae
Trochammina sp.
Trochammina sp. Parker and Jones 1859
 Ammodiscoidea - Ammodiscidae
Ammodiscus sp.
Ammodiscus sp. Reuss 1862
  -
Ammoglobigerina cf. globigeriniformis