| 释义 |
py·ro·the·ria
\ˌpīrōˈthirēə\ noun plural
Usage: capitalized
Etymology: New Latin, pyr- + -theria
: an order of Paenungulata or in some classifications a suborder of Ungulata comprising large So. American ungulates of Lower Tertiary age that have incisors like tusks and the cheek teeth all much alike and having two parallel transverse ridges |