Augee M, Gooden B and Musser A (2006) Echidna: extraordinary egg-laying mammal
(CSIRO Publishing, Australian Natural History series: Collingwood, Victoria)
If necessity is the mother of invention, then it would appear that even Mother Nature had to respond with novelty in giving us biological adaptations like the platypus (an egg-laying mammal
, or monotreme) and the marsupial Kangaroo.
Some fish have electroreceptors, as do echidnas, the other egg-laying mammal
WHO WHAT WHERE WHEN: Tintoretto; An egg-laying mammal
, such as the echidna or platypus; Royal Court Theatre; 1948.
Molecular studies had suggested that the platypus diverged from the echidna - the only other egg-laying mammal
- somewhere between 17 and 80million years ago.
A rare egg-laying mammal
showed no fear of the scientists.
The echidna (ih-KID-nuh) is another egg-laying mammal
, so it also has no belly button.
Australians call this egg-laying mammal
, or monotreme, the "Bits and Pieces Animal.
The newly sequenced platypus genome, to be published concurrently with the Stanford research, provides a wealth of data about the unique egg-laying mammal
Two long-beaked Echidnas, a primitive egg-laying mammal
, simply let scientists pick them up and bring them back to camp to be studied.
Fossils of an ancient egg-laying mammal
indicate that the configuration of the bones in all living mammals' ears arose at least twice along independent evolutionary pathways, paleontologists say.
One kind is the platypus--that weird duck-billed, egg-laying mammal
that lives in Australia.