Taphonological and palynological studies have uncovered evidence of a rich fossil flora and fauna including many Canthium seeds, a genus found mainly in African woodlands and forests.
The first recognition came in 1995 for his co-authored work with Prof. Ron Clarke of Wits on the taphonomy of the Taung site and in 1998 for his co-authored work with Prof. Henry McHenry of the University of California, Davis on limb lengths in Australopithecus africanus.