FIGURE 2 in Contribution to the systematics and zoogeography of the East-African Acomys spinosissimus Peters 1852 species complex and the description of two new species (Rodentia: Muridae)

FIGURE 2. The tooth-wear classes distinguished in Tanzanian A. spinosissimus. Cl. 1: all teeth fully erupted; wear minimal; M1 and M2: dentine of 2nd cusp-row not continuous. (RMCA 96.036-M-4828), Cl. 2: light wear; M1 and M2: dentine of the 2nd cusp-row continuous, but width of dentine-surface of t5, enamel-rim of t5. (RMCA 96.036-M-4742), Cl. 3: wear obvious but not extensive; M1: dentine-surface of t5> than enamel-rim of t5; M2: dentine-surface of 1st and 2nd row not continuous. (RMCA96.036-M-4794), Cl. 4: wear extensive; M1: much flattened cusps but still 3 separate dentine-rows; M2: 1st and 2nd dentine-rows communicating. (RMCA 96.036-M-4792), Cl. 5: wear severe; M1: very heavily eroded and at least two dentinerows continuous; M2: continuous dentine wear surface. (RMCA 96.036-M-4856).