egg-laying mammal

Also found in: Dictionary.
  • noun

Synonyms for egg-laying mammal

the most primitive mammals comprising the only extant members of the subclass Prototheria

References in periodicals archive ?
Similar to spurs found on modern egg-laying mammals, such as male platypuses, the spur is evidence that this fossil was most likely a male member of its species.
Electroreception--the ability to sense these bioelectric fields--has already been described in sharks, amphibians, fish and some egg-laying mammals.
The Echidna, one of only two egg-laying mammals, was named after Sir David in 1998 in honour of his conservation work.
The echidna and the platypus are the world's only two egg-laying mammals.
Co-researcher Stewart Nicol said the study has uncovered important information about how the egg-laying mammals reproduce.
We will be working to protect some of the world's most extraordinary species, including giant venomous shrew-like creatures, matchbox-sized bats and egg-laying mammals, all of which are teetering on the Edge of extinction.
Two long-beaked echidnas - primitive egg-laying mammals - let the scientists pick them up and carry them off for study.
By studying all features in this exquisitely preserved fossil, researchers believe Maotherium to be more closely related to marsupials and placentals than to monotremes-primitive egg-laying mammals of Australia and New Guinea such as the platypus.
Two long-beaked echidnas -primitive egg-laying mammals - let the scientists pick them up and carry them off for study.
Nephrostomes appear briefly in the embryos of egg-laying mammals, such as the platypus, and function in adult fish and amphibians.
Monotremes, the primitive, egg-laying mammals, include only the duck-billed platypus, a creature called the echidna, and a few extinct forms.
According to a report by ABC News, the finding contradicts the widely held view that monotremes, or egg-laying mammals, are "living fossils" that have not evolved.