P3R1O1T1O1T1H4E1R1I1A1N1
17 points
PROTOTHERIAN is validvalid
a monotreme [n PROTOTHERIANS]
pertaining to a member of Prototheria, which comprises the order Monotremata and related fossil forms [adj] / a member of the Prototheria [n -S]
a monotreme [n PROTOTHERIANS]
pertaining to a member of Prototheria, which comprises the order Monotremata and related fossil forms [adj] / a member of the Prototheria [n -S]