Divergence date of mammals from reptiles

Range ~300 Mya
Organism vertebrates
Reference Brian Cotterell, Fracture and Life, Imperial College Press, 2010 p.81 2nd paragraph
Comments "Mammals began to evolve from reptiles through the synapsids about 300 million years ago. Their teeth had a single reptilian cusp and all the mammalian teeth evolved from this single shape."
Entered by Uri M
ID 108645