Rietfontein (Permian of South Africa)

Where: Western Cape, South Africa (32.9° S, 21.9° E: paleocoordinates 59.6° S, 35.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Tapinocephalus Assemblage other zone, Abrahamskraal Formation (Beaufort Group), Capitanian (265.1 - 259.9 Ma)

• " [...] Middle Permian Tapinocephalus Zone of the Beaufort Series of South Africa." (Cox, 1969). Kitching (1977, "Distribution of the Karroo Vertebrate Fauna", p. 41), however, assigns this locality to the lower Tapinocephalus zone, which corresponds to the Tapinocephalus Assemblage Zone of Rubidge et al. (1995, South African Committee for Stratigraphy, Biostratigraphic Series No. 1).

•The Tapinocephalus AZ is Capitanian according to Catuneanu et al. (2005, J. Afr. Earth Sci. 43). 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).

• group of beds-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

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 92645: authorized by Johannes Mueller, entered by Torsten Liebrecht on 23.11.2009, edited by Richard Butler and Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

 Parareptilia -
Eunotosaurus africanus Seeley 1892 parareptile
BMNH R4054 (figured by Watson, 1914, figs. 3 & 4 pI. VII)
 Theromorpha - Styracocephalidae
Styracocephalus platyrhynchus2 Haughton 1929 reptile
BP/1/5433, posterior portion of skull roof with left ‘horn’; BP/1/5428, fragmentary pieces of skull roof
 Therapsida -
? Hipposaurus brinki n. sp.3 Sigogneau-Russell 1970 therapsid
 Therapsida - Pylaecephalidae
"Dicynodon jouberti" = Diictodon feliceps1
"Dicynodon jouberti" = Diictodon feliceps1 Owen 1876 dicynodont
 Therocephalia - Lycosuchidae
Trochosaurus acutus n. sp.1 Broom therapsid
Hyaenasuchus whaitsi n. sp.1 Broom therapsid