'Toxodontia' definitions:

Definition of 'Toxodontia'

From: GCIDE

Toxodonta \Tox`o*don"ta\, n.pl. [NL.] (Paleon.) An extinct order of Mammalia found in the South American Tertiary formation. The incisor teeth were long and curved and provided with a persistent pulp. They are supposed to be related both to the rodents and ungulates. Called also Toxodontia. [1913 Webster]