Fig. 8 in The Phylogenetic Resolving Power of Discrete Dental Morphology Among Extant Hedgehogs and the Implications for Their Fossil Record

Fig. 8. An example of ambiguous distribution of character states; (a) I2 cuspules always present in the juveniles and polymorphic for the adults (Hylomys suillus); (b) expression of the P3 posterior cingulum is a consequence of wear (Erinaceus amurensis).