Among vertebrates this feeding strategy can be subdivided into many categories, including folivory, frugivory, granivory but among early terrestrial vertebrates, it is feeding on leaves, stems, roots and rhizomes. Herbivorous use massive crushing dentition on the palate and mandibles. Caseids belong to the most basal clade of synapside, the Caseasauria, which also includes the small carnivorous eothrydids.
Among vertebrates, this feeding strategy can be classified into numerous categories, including herbivory, fruit-eating, seed-eating. However, among early terrestrial vertebrates, it primarily involves consuming leaves, stems, roots, and underground plant parts. Herbivores employ massive crushing teeth on the palate and jawbones.