Coega (Pliocene of South Africa)

Where: Cape, South Africa (33.8° S, 25.7° E: paleocoordinates 33.9° 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; shelly/skeletal sandstone

• The high wave energy that existed during the deposition of this shelly layer is suggested by the fragmented and worn nature of the fossil shells.
• Two Cypraea zietsmani specimens were found in a coquinite layer that had been deposited

•as a beach berm.

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 179485: authorized by Pete Wagner, entered by Pete Wagner on 17.06.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

 Arcida - Arcidae
"Arca noae" = Arca (Arca) noae Linnaeus 1758 ark
Barbatia foliata Forsskal 1775 clam
 Arcida - Glycymerididae
 Ostreida - Ostreidae
 Ostreida - Pteriidae
Pinctada "sp. nov. ?" RÅ¡ding 1798 pearl oyster
 Ostreida - Malleidae
Isognomon sp. Lightfoot 1786 oyster
 Cardiida - Mactridae
 Cardiida - Donacidae
Donax serra Roding 1798 clam
 Cardiida - Cardiidae
 Neogastropoda - Buccinidae
"Bullia digitalis" = Buccinum digitale
"Bullia digitalis" = Buccinum digitale Dillwyn 1817 true whelk
 Cypraeoidea - Cypraeidae
"Cypraea zietsmani" = Afrozoila zietsmani
"Cypraea zietsmani" = Afrozoila zietsmani Liltved and Leroux 1988 cowry
 Sorbeoconcha - Siliquariidae
"Siliquaria cf. wilmanae" = Tenagodus
"Siliquaria cf. wilmanae" = Tenagodus snail
 Scleractinia - Dendrophylliidae
Balanophyllia sp. Wood 1844 stony coral