prototherian

Etymology
From, from + ;.

Adjective

 * 1) Belonging or pertaining to the subclass  of monotremes.
 * 2) * 2000, Monroe W. Strickberger, Evolution, third edition, Jones and Bartlett Publishers, ISBN 0-7637-1066-0, pages 446–447:
 * […]the modern remaining prototherian lines are the Australian and New Guinean monotremes, egg-laying mammals now represented by the grub- and shrimp-eating platypus (Ornithorhyncus) and ant-eating echidna ( and ).
 * 1) * 2000, Monroe W. Strickberger, Evolution, third edition, Jones and Bartlett Publishers, ISBN 0-7637-1066-0, pages 446–447:
 * […]the modern remaining prototherian lines are the Australian and New Guinean monotremes, egg-laying mammals now represented by the grub- and shrimp-eating platypus (Ornithorhyncus) and ant-eating echidna ( and ).

Noun

 * 1) Any of the egg-laying mammals of the subclass ; a monotreme.

Translations

 * Italian: