ammonites
Lemoenfontein 44, Rouxville District (Triassic of South Africa)

Where: Free State, South Africa (30.6° S, 26.6° E: paleocoordinates 66.8° S, 12.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Cynognathus B Assemblage zone, Burgersdorp Formation (Beaufort Group), Anisian (247.2 - 242.0 Ma)

• "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).

• group of beds-level stratigraphic resolution

Environment/lithology: dry floodplain; concretionary, red siliciclastic sediments

• 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).

Size class: macrofossils

Collected by J. W. Kitching, R. M. H. Smith; reposited in the BPI

• SAM = Iziko South African Museum, Cape Town

Primary reference: 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] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92310: authorized by Johannes Mueller, entered by Torsten Liebrecht on 05.11.2009