Leeurivier: Capitanian, South Africa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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| 1 individual | ||||||||||
| SAM-PK-K5127; see comments on taxonomic list | ||||||||||
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Anomodontia
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| Angielczyk et al. 2016 | 1 individual | |||||||||
| SAM-PK-K7607, strongly anteroposteriorly compressed skull missing the zygomatic arches and the interorbital skull roof, mandible preserving most of left and right dentaries, complete left humerus. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | South Africa | State/province: | Western Cape | County: | Beaufort West |
| Coordinates: | 32.4° South, 22.2° East (view map) | ||||
| Paleocoordinates: | 53.0° South, 27.7° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Capitanian | 10 m.y. bin: | Permian 4 |
| Key time interval: | Capitanian | Other zone: | Tapinocephalus Assemblage |
| Age range of interval: | 264.28 - 259.51 m.y. ago | ||
| Age estimate: | minimum 261.241 ± 0.088 Ma (U/Pb) |
Stratigraphy
| Geological group: | Beaufort | Formation: | Abrahamskraal | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Kitching (1977, "Distribution of the Karroo Vertebrate Fauna") assigns this locality to the lower Tapinocephalus Zone. Angielczyk et al. (2016) list this locality as Tapinocephalus Zone. Radioisotopic data constrains the likely age of the Tapinocephalus Zone to Capitanian (Rubidge et al. 2013). | |||||
Lithology and environment
| Primary lithology: | sandstone | ||
| Secondary lithology: | claystone | ||
| Lithology description: "fining-upward succession of sandstones and purple mudstones containing numerous thin chert bands and rich tetrapod faunas" (general lithology description of the Abrahamskraal Fm. in Catuneanu et al., 2005, J. Afr. Earth Sci. 43). | |||
| Environment: | "floodplain" | Tectonic setting: | foreland basin |
| Geology comments: " [...] deposited mainly by overbank flooding of large meandering rivers of variable sinuosity, draining an extensive alluvial plain [...]" (Catuneanu et al., 2005). | |||
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: SAM = Iziko South African Museum, Cape Town | |
| Taxonomic list comments:Neither Kitching (1977, "Distribution of the Karroo Vertebrate Fauna") nor Lee (1997, Mod. Geol. 21) mention Bradysaurus remains from this locality. | |
Metadata
| Also known as: | Leeuw Rivier | ||
| Database number: | 93100 | ||
| Authorizer: | J. Mueller, R. Butler | Enterer: | T. Liebrecht, R. Butler |
| Modifier: | R. Butler | Research group: | vertebrate |
| Created: | 2010-01-04 06:15:57 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2010-01-04 06:15:57 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 31439. | S. H. Haughton and L. D. Boonstra. 1929. Pareiasaurian studies. Part I. - An Attempt at a Classification of the Pareiasauria based on Skull Features. Annals of the South African Museum 28(1):79-87 [J. Mueller/T. Liebrecht/T. Liebrecht] |
Secondary references:
| 57977 | K. D. Angielczyk, B. S. Rubidge, M. O. Day and F. Lin. 2016. A reevaluation of Brachyprosopus broomi and Chelydontops altidentalis, dicynodonts (Therapsida, Anomodontia) from the middle Permian Tapinocephalus Assemblage Zone of the Karoo Basin, South Africa. Journal of Vertebrate Paleontology e1078342 [R. Butler/R. Butler] |