St. George's Strand (Pliocene of South Africa)

Where: Cape, South Africa (33.8° S, 25.7° E: paleocoordinates 34.0° S, 25.2° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Alexandria Formation, Pliocene (5.3 - 2.6 Ma)

• STRATIGRAPHIC RELATIONS: From Alexandria Formation, which unconformably overlies Late Cretaceous Sundays River Fm in places, and is overlain by eolian calcarenites. AGE: Much discussed, although not clearly in text, to range from Miocene to Pleistocene, but also possible Eocene (see Haughton pers. comm., cited in text). Assigned here to a Pliocene age, based on more recent publications (King, 1972). STRATIGRAPHIC POSITION: A composite list representing the entire formation.

• bed-level stratigraphic resolution

Environment/lithology: foreshore; poorly lithified, pebbly conglomerate and shelly/skeletal, calcareous sandstone

• A foreshore (beach) depositional environment is inferred for the sequence exposed at this locality.
• Thin pebble-cobble beds alternate with coquina layers.

Size class: macrofossils

Collected by Ross Zietsman in 06/1981

• South African Musem (SAM)

Primary reference: W. Liltved and F. Leroux. 1988. A new fossil Cypraea (Gastropoda, Prosobranchia) from South Africa with notes on the Alexandria Formation. Veliger 30(4):400-407 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179484: authorized by Pete Wagner, entered by Pete Wagner on 17.06.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Heterostropha - Architectonicidae
 Basommatophora - Siphonariidae
 Neogastropoda - Turbinellidae
Vasum "sp. nov. ?" Röding 1798 snail
 Neogastropoda - Muricidae
"Thais capensis" = Reishia capensis, Thais haemostoma
"Thais capensis" = Reishia capensis Saussaye 1852 murex snail
Thais haemostoma murex snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
 Neogastropoda - Fasciolariidae
 Neogastropoda - Buccinidae
Pseudoliva "sp. nov. ?" Swainson 1840 true whelk
"Bullia digitalis" = Buccinum digitale Dillwyn 1817 true whelk
 Neogastropoda - Ancillariidae
 Sorbeoconcha - Cypraeidae
"Cypraea zietsmani" = Afrozoila zietsmani
"Cypraea zietsmani" = Afrozoila zietsmani Liltved and Leroux 1988 cowry
 Cerithioidea - Turritellidae
"Turritella carinifera" = Turritella (Torquesia) carinifera
"Turritella carinifera" = Turritella (Torquesia) carinifera Deshayes 1824 turret shell
Bivalvia
 Arcida - Glycymerididae
 Mytilida - Mytilidae
Perna perna Linnaeus 1758 mussel
 Cardiida - Veneridae
 Carditida - Crassatellidae