Fig. 4. The m1 in A New Eocene Rodent from the Lower Arshanto Formation in the Nuhetingboerhe (Camp Margetts) Area, Inner Mongolia

Fig. 4. The m1 of Archetypomys erlianensis. a, V14623.10, right m1; b, V14622.18, left m1; b1, buccal view of V14622.18; c, V14622.19, right m1; d, V14623.11, right m1; e, V14622.20, left m1; f, V14622.21, right m1; g, V14622.22, right m1; h, V14623.12, left m1; i, V14623.13, right m1; j, left m1 of Tribosphenomys minutus from the Late Paleocene Subeng locality, Inner Mongolia.