Arsinoitherium
noun
Ar·si·noi·the·ri·um
ˌärsəˌnȯiˈthirēəm
: a genus of extinct mammals (order Embrithopoda) of the Oligocene of Egypt having limbs resembling those of the elephant and a pair of large horns
Word History
Etymology
New Latin, irregular from Arsinoë II †271 b.c. queen of Egypt + New Latin -therium