Monotremes definitions

Monotremes

are the most primitive Mammals and are egg-laying. The Duck-Billed Platypus is a famous example.
Found on http://www.encyclo.co.uk/local/21282

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monotremes

Egg-laying mammals; e.g., the spiny anteater and the duck-billed platypus.
Found on https://www.encyclo.co.uk/local/21571

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