São Nicolau, bed III (Cretaceous of Angola)

Where: Angola (14.3° S, 12.4° E: paleocoordinates 28.2° S, 0.1° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Canico Member (Baba Formation), Middle Santonian (85.8 - 83.5 Ma)

• The relative abundance of Hauericeras (Gardeniceras) gardeni (Baily) and Texanites venustus Collignon in the Sao Nicolau fauna is believed to be biostratigraphically meaningful since these taxa first appear only in the Middle Santonian "Zone a Texanites hourcqui" of Madagascar (Besairie 1972: 285) and, likewise, are absent from the Lower Santonian of Zululand (pers. obs.). The balance of faunal evidence favours, therefore, a mid-Santonian age for the Canico Member at Sao Nicolau.

• bed-level stratigraphic resolution

Environment/lithology: lithified, shelly/skeletal, sandy packstone

• Coquinoidal orange sandy limestone with fossils

Size class: macrofossils

Collection methods: Repository: South African Museum

Primary reference: M. R. Cooper. 2003. Stratigraphy and palaeontology of the Upper Cretaceous (Santonian) Baba Formation at São Nicolau, Angola. Annals of the South African Museum 110:147-170 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 210904: authorized by Matthew Clapham, entered by Matthew Clapham on 21.06.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Desmoceratidae
Damesites sugata Forbes 1846 ammonite
 Ammonitida - Collignoniceratidae
Texanites venustus Collignon 1948 ammonite
? Protexanites sp. Matsumoto 1955 ammonite
 Ammonitida - Baculitidae
Baculites aff. bailyi Woods 1906 ammonite
Bivalvia
 Pectinida - Plicatulidae
"Plicatula aff. auressensis" = Plicatula (Plicatula) auressensis
"Plicatula aff. auressensis" = Plicatula (Plicatula) auressensis Coquand 1862 scallop
 Pectinida - Neitheoidae
"Neithea (Neithea) quinquecostata" = Neithea quinquecostata
"Neithea (Neithea) quinquecostata" = Neithea quinquecostata Sowerby 1814 scallop
 Ostreida - Ostreidae
Oscillopha cf. dichotoma Bayle 1849 oyster
 Cardiida - Arcticidae
Veniella undata Conrad 1852 clam
 Cardiida - Cardiidae
Protocardia cf. umkwelanensis Etheridge 1904 cockle
Trachycardium cf. reynoldsi Rennie 1929 cockle
 Trigoniida - Megatrigonioidae
"Acanthotrigonia sp." = Pterotrigonia (Acanthotrigonia)
"Acanthotrigonia sp." = Pterotrigonia (Acanthotrigonia) van Hoepen 1929 clam