The evolution of viviparity and placentation revisited.
Qualls
C P
CP
Andrews
R M
RM
Mathies
T
T
D000818:Animals; D005075:Biological Evolution; D005260:Female; D008954:Models, Biological; D010929:Placentation; D011247:Pregnancy; D011270:Pregnancy, Animal; D012104:Reptiles / Q000502:physiology*