(ˈ)pēn+ noun plural
Usage: capitalized
Etymology: New Latin, from Latin paene nearly, almost + New Latin Ungulata; so called from their position in the evolutionary scale
in some classifications : a major division of eutherian mammals comprising the extinct orders Pantodonta, Dinocerata, Pyrotheria, and Embrithopoda together with the surviving orders Proboscidea, Hyracoidea, and Sirenia