Abstract:
This paper comprises a description of a natural cast of the endocranium of Arctomeles pliocaenicus Stach from the locality Węże I near Działoszyn and characteristics of the brain of this species. The brains of Arctomeles, Meies meles L. and Arctonyx collaris Cuv. have been compared and conclusions have been made on the basis of the external structure of the brain and dentition as to the genetic relationships and behaviour of these three species.