Where: Free State, South Africa (28.2° S, 28.0° E: paleocoordinates 65.5° S, 10.6° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Cynognathus Assemblage Zone Subzone A other zone, Burgersdorp Formation (Beaufort Group), Olenekian (251.2 - 247.2 Ma)
• Lower horizons of the Burgersdorp Formation; Cynognathus Assemblage Zone Subzone A; late Olenekian age
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; siliciclastic sediments
Size class: macrofossils
Collected by J. Neveling, P. J. Hancox, C. Marshall, R. J. Damiani, A. M. Jeannot in 1996, 2000, 2001; reposited in the BPI
Collection methods: bulk, surface (float), mechanical,
• The Palacrodon specimen was found by the student Catherine Marshall during a field excursion in September 1996 "amongst the surface float" (Gow, 1999).
•The holotype of Bathignathus poikilops was found by J. Neveling in February 2000 and additional material of that taxon was recovered "during a subsequent trip to the locality in April 2001" (Damiani & Jeannot, 2002). "Both specimens [i.e. the 2001 material; TL] were found imbedded at the base of an approximately 30 cm thick, bluish-grey, fine-grained sandstone layer, immediately above typical red-green mudstone of the Cynognathus Assemblage Zone. In the field these were consolidated with a dilute Glyptal solution before being either directly removed in sections (skull) or plastered (mandible). In the laboratory the bulk of the matrix was removed mechanically using an airscribe, with subsequent finer preparation achieved using a hand-held pin-vice. The prepared surfaces were cleaned using a paint-brush and water, and cyanoacrylate glue used to join broken bone" (Damiani & Jeannot, 2002).
Primary reference: F. Abdala, J. Neveling, and J. Welman. 2006. A new trirachodontid cynodont from the lower levels of the Burgersdorp Formation (Lower Triassic) of the Beaufort Group, South Africa and the cladistic relationships of Gondwanan gomphodonts. Zoological Journal of the Linnean Society 147:383-413 [R. Butler/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 98617: authorized by Richard Butler, entered by Richard Butler on 14.10.2010, edited by Trisha Wolfe
Creative Commons license: CC BY (attribution)