ammonites

Hugoskop, Rouxville District: Anisian, South Africa
collected by J. W. Kitching

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:South Africa State/province:Free State County:Xhariep
Coordinates: 30.4° South, 26.8° East (view map)
Paleocoordinates:67.3° South, 7.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Triassic Epoch:Middle Triassic
Stage:Anisian 10 m.y. bin:Triassic 2
Key time interval:Anisian Zone: Cynognathus assemblage, subzone B
Age range of interval:245.0 - 237.0 m.y. ago
Stratigraphy
Geological group:Beaufort Formation:Burgersdorp
Stratigraphic resolution:group of beds
Stratigraphy comments: "Subzone B of the Cynognathus Assemblage Zone, Beaufort Group, Middle Triassic (Anisian)." (Modesto & Damiani, 2003). This biostratigraphic assignment corresponds to the Burgersdorp Formation (see Catuneanu et al., 2005, J. African Earth Sci. 43).
Lithology and environment
Primary lithology: "siliciclastic"
Environment:dry floodplain Tectonic setting:foreland basin
Geology comments: The Burgersdorp formation was "deposited on a semi-arid, slowly aggrading floodplain drained by sluggish meandering stream channels, which supplied water and sediment to the pedogenically-influenced overbank environments via crevasse splays (Hancox, 1998). Lakes and ponds developed on the floodplain [...]" (Catuneanu et al., 2005, J. African Earth Sci. 43).
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Articulated whole bodies:none
Associated major elements:all
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:BPI
Collectors:J. W. Kitching
Metadata
Database number:92313
Authorizer:J. Mueller Enterer:T. Liebrecht
Modifier:T. Liebrecht Research group:vertebrate
Created:2009-11-05 18:10:50 Last modified:2009-11-05 19:26:47
Access level:authorizer only Released:2012-11-05 18:10:50
Reference information
Primary reference:
31115 C. E. Gow. 1977. New Procolophonids from the Triassic Cynognathus Zone of South Africa. Annals of the South African Museum 72(6):109-124 [J. Mueller/T. Liebrecht]

Secondary references:

26917 S.P. Modesto and R. J. Damiani. 2003. Taxonomic status of Thelegnathus browni Broom, a procolophonid reptile from the South African Triassic. Annals of Carnegie Museum 72(1):53-64 [J. Mueller/J. Dummasch]