Swaelkrans, Murraysburg (Permian to of South Africa)

Also known as Swalekranz

Where: Western Cape, South Africa (32.0° S, 23.8° E: paleocoordinates 62.4° S, 28.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Dicynodon Assemblage zone, Balfour Formation (Beaufort Group), Wuchiapingian to Wuchiapingian (259.9 - 252.2 Ma)

• Fossils come from the Daptocephalus or Dicynodon Assemblage Zone. Geographic and stratigraphic data suggest that the locality is in the Balfour Formation of the Beaufort Group (see Catuneanu et al., 2005, J. Afr. Earth Sci., 43, figs. 24, 25). The Dicynodon AZ is constrained to late Wuchiapingian-Changhsingian on the basis of radioisotopic data (Rubidge et al. 2013, Geology).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; green, calcareous mudstone

Size class: macrofossils

Preservation: concretion

Collected by J. Kitching in 1947; reposited in the BPI

Collection methods: mechanical, acetic,

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 80176: authorized by Johannes Mueller, entered by Jana Dummasch on 08.04.2008, edited by Richard Butler, Juan Benito Moreno and Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Anomodontia - Cryptodontidae
"Pelanomodon halli" = Pelanomodon moschops4, "Aulacocephalodon pricei n. sp." = Aulacephalodon bainii4, Oudenodon bainii4
"Pelanomodon halli" = Pelanomodon moschops4 Broom 1913 therapsid
"Aulacocephalodon pricei n. sp." = Aulacephalodon bainii4 Owen 1845 therapsid
BP 153, a complete skull
Oudenodon bainii4 Owen 1859 therapsid
 Dicynodontia -
"Dicynodon ictinops" = Emydops arctatus4, "Dicynodon lissops" = Daptocephalus leoniceps4
"Dicynodon ictinops" = Emydops arctatus4 Owen 1876 dicynodont
"Dicynodon lissops" = Daptocephalus leoniceps4 Owen dicynodont
 Therocephalia - Ictidosuchidae
Ictidosuchops intermedius4 Broom 1938 therapsid
 Therocephalia - Whaitsiidae
"Theriognathus microps" = Theriognathus microps3, "Whaitsia platyceps" = Theriognathus microps4, "Notosollasia laticeps" = Theriognathus microps1, "Notosollasia longiceps" = Theriognathus microps1
"Theriognathus microps" = Theriognathus microps3 Owen 1876 therapsid
BP/1/717; BP/1/719; BP/1/724; SAM-PK-K5263; SAM-PK-K7511
"Whaitsia platyceps" = Theriognathus microps4 Owen 1876 therapsid
"Notosollasia laticeps" = Theriognathus microps1 Owen 1876 therapsid
BP/1/143, skull. Three additional specimens mentioned by Kitching (1977)
"Notosollasia longiceps" = Theriognathus microps1 Owen 1876 therapsid
BP/1/140, 146, skulls
 Therapsida - Gorgonopidae
Cyonosaurus cf. kitchingi4, "Aloposauroides tenuis" = Aloposaurus tenuis2, "Leontosaurus vanderhorsti n. gen. n. sp." = Leontosaurus vanderhorsti5, "Sycosaurus vanderhorsti" = Leontosaurus vanderhorsti4, "Rubidgea platyrhina n. sp." = Leontosaurus vanderhorsti5
Cyonosaurus cf. kitchingi4 Broom 1948 therapsid
"Aloposauroides tenuis" = Aloposaurus tenuis2 Brink and Kitching 1953 therapsid
BP/1/257, compressed and crushed skull with lower jaw
"Leontosaurus vanderhorsti n. gen. n. sp." = Leontosaurus vanderhorsti5 Broom and George 1950 therapsid
BP/1/743, very flattened skull with lower jaw. UCMP 42750, crushed skull
"Sycosaurus vanderhorsti" = Leontosaurus vanderhorsti4 Broom and George 1950 therapsid
"Rubidgea platyrhina n. sp." = Leontosaurus vanderhorsti5 Broom and George 1950 therapsid
BP/1/248, well-preserved but flattened skull
 Therapsida - Galesauridae
Cynosaurus suppostus4 Owen 1876 cynodont
Reptilia
 Parareptilia - Millerettidae
"Millerosaurus pricei n. sp." = Milleropsis pricei
"Millerosaurus pricei n. sp." = Milleropsis pricei Watson 1957 parareptile
BP/1/720 (suite of at least 8 specimens including the type)
 Procolophonomorpha -
Pareiasaurus serridens4 Owen parareptile