I. -nch(ē)ə noun plural
Usage: capitalized
Etymology: New Latin, from tox- (II) + -odontia
: a suborder of Notoungulata comprising generalized ungulates of the Paleocene to Pleistocene of So. America mostly of huge size equaling a large rhinoceros and having mostly persistent teeth that consist of large incisors, small lower canines, and high-crowned curved molars
II.
Etymology: New Latin, from tox- (II) + -odontia
synonym of notoungulata