Blog Source: discovermagazine.com
Biologists classify the platypus as a monotreme, an egg-laying mammal with a single opening for reproduction and excretion. But is it truly a mammal? A draft of the genetic sequence of Glennie [subscription required], a female platypus ...
Blog Source: viraladx.com
Synapsids were considered to be the reptilian lineage that led to mammals via gradually evolved, increasingly mammalian features, hence the name "mammal-like reptiles" which became a broad, traditional description for all non-mammalian ...