Robinson, J. T. 



1961. The australopithecines and their bearing on the origin of man and of stone 

 tool-making. S. Afr. J. Sci. 57: 3-13. 

 Ryan. W. B. F. 



1973. Geodynamic implications of the Messinian crisis of salinity. In C. W. 

 Drooger. (ed.), pp. 26-38. Messinian events in the Mediterranean. Am- 

 sterdam: North Holland. 

 Seilacher, A. 



1992. Vendobionta and Psammocorallia: lost constructions of Precambrian evo- 

 lution. J. Geol. Soc. London 149: 609-613. 



1999. Biomat-related lifestyles in the Precambrian. PALAIOS 14: 86-93. 

 Sillen, A., and T. Hoering 



1993. Chemical characterisation of burnt bones from Swartkrans. In C. K. Brain 

 (ed.): Swartkrans. A cave's chronicle of early man, pp. 243-250. Pretoria: 

 Transvaal Museum Monograph No 8. 



Tattersall, I. 



2000. Once we were not alone. Sci. Am. 282(1): 56-62. 

 Tobias, P. V. 



1971. The brain in hominid evolution. New York and London: Columbia Univ. 

 Press. 

 Vrba, E. S. 



1995. The fossil record of African antelopes (Mammalia, Bovidae) in relation to 

 human evolution and evolution. In E. S. Vrba (ed.), Paleoclimate and evo- 

 lution, with emphasis on human origins, pp. 385-424. New Haven and 

 London: Yale Univ. Press. 

 Watson. V. 



1993. Composition of the Swartkrans bone accumulations in terms of skeletal 

 parts and animals represented. //; C. K. Brain (ed.). Swartkrans. A cave's 

 chronicle of early man, pp. 35-74. Pretoria: Transvaal Museum Monograph 

 No. 8. 

 Whiteaves. J. F. 



1892. Description of a new genus and species of phyllocarid crustaces from the 

 Middle Cambrian of Mount Stephen, B.C. Can. Rec. Sci. 5: 205-208. 



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