Fig. 13 in Phylogenetic Studies On Didelphid Marsupials Ii. Nonmolecular Data And New Irbp Sequences: Separate And Combined Analyses Of Didelphine Relationships With Denser Taxon Sampling

Fig. 13. Anterolingual views of left M3 illustrating taxonomic differences in cingular morphology. Left, Marmosa murina (AMNH 272870) with preprotocrista and anterolabial cingulum joined to form a continuous shelf along the anterior margin of the tooth crown. Right, Monodelphis adusta (AMNH 272781) with separate crista and cingulum (no continuous shelf).