Pyrotheria
plural noun
Py·ro·the·ria
| \ ˌpīrōˈthirēə\
Definition of Pyrotheria
: an order of Paenungulata or in some classifications a suborder of Ungulata comprising large South American ungulates of Lower Tertiary age that have incisors like tusks and the cheek teeth all much alike and having two parallel transverse ridges
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