Grootdriefontein (Dicynodon Assemblage Zone) (Permian of South Africa)

Also known as Groot Driefontein

Where: Western Cape, South Africa (31.9° S, 23.9° E: paleocoordinates 63.6° S, 26.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Dicynodon Assemblage Zone zone, Teekloof Formation (Beaufort Group), Changhsingian (254.2 - 252.2 Ma)

• It is said that the fossils come from the "Daptocephalus zone" (Gow, 1972) which is equivalent to the Dicynodon Assemblage Zone. Geographic and stratigraphic data suggest that the locality is in the Teekloof Formation of the Beaufort Group (see Catuneanu et al., 2005, J. Afr. Earth Sci., 43, figs. 24, 25). The Dicynodon AZ is Early and Middle Changhsingian according to Catuneanu et al. (2005).

•Direct maximum date for the Dicynodon Aseemblage Zone from Rubidge et al., 2013

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by J. Kitching in 1940

• R.C. = "S. H. Rubidge collection housed on the farm Wellwood near Graff Reinet" (Gow, 1972)

Primary reference: C. E. Gow. 1972. The osteology and relationships of the Millerettidae (Reptilia: Cotylosauria). Journal of Zoology, London 167:219-264 [J. Mueller/J. Dummasch]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80223: authorized by Johannes Mueller, entered by Jana Dummasch on 09.04.2008, edited by Juan Benito Moreno

Creative Commons license: CC BY (attribution)

Taxonomic list

• Gow (1972) lists all specimens of Milleretta rubidgei, except the type, as "Milleretta" without a specific epithet. Since Mileretta is a monospecific genus all specimens listed as "Milleretta" by Gow (1972) are listed as "Milleretta rubidgei" in the taxomomic list.
Osteichthyes
 Anomodontia - Cryptodontidae
Oudenodon bainii1 Owen 1859 therapsid
 Dicynodontia -
"Dicynodon daptocephaloides n. sp." = Daptocephalus leoniceps2
"Dicynodon daptocephaloides n. sp." = Daptocephalus leoniceps2 Owen dicynodont
BP/1/555, a nearly complere skull
 Therocephalia - Whaitsiidae
"Whaitsia platyceps" = Theriognathus microps1
"Whaitsia platyceps" = Theriognathus microps1 Owen 1876 therapsid
RC 380
 Therapsida - Gorgonopidae
Cyonosaurus cf. kitchingi1 Broom 1948 therapsid
 Therapsida - Procynosuchidae
"Paracynosuchus rubidgei n. gen. n. sp." = Procynosuchus delaharpeae1
"Paracynosuchus rubidgei n. gen. n. sp." = Procynosuchus delaharpeae1 Broom 1937 cynodont
Fairly complete skull
Reptilia
 Parareptilia - Millerettidae
Milleretta rubidgei Broom 1938 parareptile
R.C. 14b