Placental morphology in two sympatric Andean lizards of the genus Liolaemus (Reptilia: Liolaemidae).

Viviparity is a remarkable feature in squamate sauropsids and it has evolved multiple times in parallel with the formation of a placenta. One example of this repeated evolution of viviparity and placentation occurs in the species-rich South American genus Liolaemus with at least six independent origins of viviparity. However, evolutionary studies of… CONTINUE READING