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Prototherian (Noun)

Meaning

Primitive oviparous mammals found only in Australia and Tasmania and New Guinea.

Classification

Nouns denoting animals.

Examples

  • Certain fossil records suggest the presence of prototherian mammals on other continents in the distant past, however their modern habitats are limited to Australia, Tasmania, and New Guinea.
  • Prototherian mammals are believed to have evolved separately from the therian mammals that are found on other continents around the world.
  • Due to their unique egg-laying abilities, prototherian mammals can be classified as one of the most distinct evolutionary branches of mammals.
  • Echidnas and platypuses are the only remaining examples of prototherian mammals, with both having specific adaptations to their environment.
  • Some mammals, like the extinct Ornithorhynchus anatinus taeniatus, belong to the prototherian group that lays eggs as part of their reproductive cycle.

Hypernyms

  • Mammalian

Hyponyms

  • Egg-laying Mammal
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