Australia | 1985 | 5 Cents | Echidnas
Echidnas
Echidnas are egg-laying mammals
(monotremes) of the family Tachyglossidae, comprising four living species found
in Australia and New Guinea. Along with the platypus, they are the only extant
mammals that lay eggs. They eat ants and termites but are unrelated to true
anteaters. Evolving 20–50 million years ago from an aquatic, platypus-like
ancestor, echidnas are now fully terrestrial. Their name comes from a
mythological creature combining traits of mammals and reptiles.
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