Monotremata (Monotremes) is an order of mammals. There are 6 species of monotremes, in 4 genera and 3 families. This order has been around since the aptian age. They includes groups like Platypus, Kollikodontidae, and Echidnas. Reproduction is dioecious.
EOL has data for 13 attributes, including:
The environments in which many monotremes species are known to live. Select an environment to see its monotremes species checklist.