Boesmansrivier (Permian of South Africa)

Also known as Bushmans Rivier

Where: Western Cape, South Africa (32.5° S, 22.3° E: paleocoordinates 59.9° S, 34.5° W)

• coordinate based on political unit

• hand sample-level geographic resolution

When: Tapinocephalus or Pristerognathus Assemblage zone, Abrahamskraal Formation (Beaufort Group), Capitanian (264.3 - 259.5 Ma)

• " [...] Middle Permian Tapinocephalus Zone of the Beaufort Series of South Africa." (Cox, 1969). Kitching (1977, "Distribution of the Karroo Vertebrate Fauna") assigns this locality to the middle Tapinocephalus Zone. This corresponds to the transition of the Tapinocephalus and Pristerognathus Assemblage Zones of Rubidge et al. (1995, South African Committee for Stratigraphy, Biostratigraphic Series No. 1).

•The geographic and biostratigraphic position of the locality suggests that the site is in the Abrahamskraal Formation, which is of Capitanian age (see Catuneanu et al., 2005, J. Afr. Earth Sci. 43 figs. 24, 25).

• bed-level stratigraphic resolution

Environment/lithology: dry floodplain; hematitic, gray, green, silty mudstone

• " [...] deposited mainly by overbank flooding of large meandering rivers of variable sinuosity, draining an extensive alluvial plain [...]. Deposition occurred under semi-arid climatic conditions [...]." (Catuneanu et al., 2005, p. 236; general description of the environment represented by the deposits of the Abrahamskraal and Teekloof Fms.)
• " [...] preserved in a non-calcareous, olive-grey, silty mudstone (subgreywacke), which shows traces of haematite staining." (Cox, 1969, with regard to Eunotosaurus)

Size class: macrofossils

Reposited in the BMNH

• SAM = South African Museum, Cape Town

Primary reference: C. B. Cox. 1969. The Problematic Permian Reptile Eunotosaurus. Bulletin of the British Museum (Natural History), Geology Series 18(5):167-196 [J. Mueller/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92646: authorized by Johannes Mueller, entered by Torsten Liebrecht on 23.11.2009, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Therapsida - Titanosuchidae
"Parascapanodon sp." = Titanosuchus1
"Parascapanodon sp." = Titanosuchus1 Owen 1876 therapsid
"some limb-bones"
 Therapsida - Tapinocephalidae
Phocosaurus sp.1 Seeley 1888 therapsid
"femur"
 Therapsida - Anteosauridae
Anteosaurus major n. sp.1 Boonstra 1937 therapsid
Reptilia
 Theromorpha - Styracocephalidae
Styracocephalus platyrhynchus n. gen. n. sp.2 Haughton 1929 reptile
SAM 8936 (holotype), dorsoventrally compressed skull with greater portion of left ramus of lower jaw
 Parareptilia -
Eunotosaurus africanus Seeley 1892 parareptile
SAM K 1132