Evolutionary History
For more details on this topic, see Evolution of mammals.Cladogram following, which takes Mammalia to be the crown group.
|
|||||||||||||||||||||||||||||||||||||||||||||||||
Synapsida, the group which contains mammals and their extinct relatives, originated during the Pennsylvanian subperiod, when they split from the lineage that led to reptiles and birds. Crown group mammals evolved from earlier mammaliaforms during the Early Jurassic.
Read more about this topic: Mammal Anatomy
Famous quotes containing the words evolutionary and/or history:
“The point is, ladies and gentlemen, that greed, for lack of a better word, is good. Greed is right. Greed works. Greed clarifies, cuts through, and captures the essence of the evolutionary spirit.”
—Stanley Weiser, U.S. screenwriter, and Oliver Stone. Gordon Gekko (Michael Douglas)
“Every literary critic believes he will outwit history and have the last word.”
—Mason Cooley (b. 1927)