Prototheria
— Navneord
– Engelsk
~ echidnas; platypus
prototherian
— Navneord
– Engelsk
~ primitive oviparous mammals found only in Australia and Tasmania and New Guinea
prototypal
— Tillægsord
– Engelsk
~ representing or constituting an original type after which other similar things are patterned; "archetypal patterns"; "she was the prototypal student activist"