Oviparity
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Oviparous animals are animals that reproduce by depositing unfertilized egg cells or fertilized zygotes outside the body in metabolically independent incubation organs, which nurture the embryo into m
Blue jay
Duck billed platypus Scottsdale
Eretmochelys imbricata 519217373
White shark
Platypus
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The platypus, sometimes referred to as the duck-billed platypus, is a semiaquatic, egg-laying mammal endemic to eastern Australia, including Tasmania. The platypus is the sole living representative of
Oviparity
…ovoviviparity. Oviparity occurs in all birds, most reptiles, some fishes, and most arthropods. Among mammals, monotremes (four species of echidna, and the platypus) are uniquely oviparous. Embryoparity, in which the embryo develops for a significant amount of time before the egg is laid. The definitive embryo is…
A book for children published in Germany in 1798
Illustration from the first scientific description in 1799
Colour print from 1863