PROTOTHERIAN

prototherian

(noun) primitive oviparous mammals found only in Australia and Tasmania and New Guinea

Source: WordNet® 3.1

Etymology

Adjective

prototherian (comparative more prototherian, superlative most prototherian)

Belonging or pertaining to the subclass Prototheria of monotremes.

Noun

prototherian (plural prototherians)

Any of the egg-laying mammals of the subclass Prototheria; a monotreme.

Source: Wiktionary

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