Fig. 3
From: Early evidence of molariform hypsodonty in a Triassic stem-mammal
Postcanine replacement of Triassic and Early Jurassic cynodonts. Lower jaws of mature individuals of selected species. Green cross, addition of new tooth loci in adults; red “x”, loss of older teeth in adults; Horizontal arrow, strong mesial drift62; black vertical arrows, continuous vertical replacement; red vertical arrows, deciduous teeth lost at a younger age and not replaced. A alternate replacement, C horizontal continuous sequential dental replacement of postcanines, D diphyodonty, H hypsodonty. Not to scale. Phylogeny based on Liu & Abdala28 and Ruta et al.22. Chronostratigraphy from Cohen et al.80
