Monotremes are not a very various crew today, and there has not been plenty fossil data recognized until instead recently.
In some ways, monotremes are very primitive for mammals because, like reptiles and birds, they lay eggs alternatively than having stay birth.
The monotremes are a group of rather specialised egg-laying predatory mammals, containing the platypus and echidnas. There are solely 5 living species of monotreme, contained within two families: Family Ornithorhynchidae: the platypus, a single species in a single genus, Ornithorhynchus anatinus.
These three organizations are monotremes, marsupials, and the greatest group, placental mammals.
Monotremes are mammals that lay eggs. The only monotremes that are alive these days are the spiny anteater, or echidna, and the platypus. They stay in Australia, Tasmania, and New Guinea.
Learn more about monotremes here:
