However 150 million year old specimens readily definable as snakes with lizard-like skeletal structures have been uncovered in South America and Africa.[16] It has been agreed, on the basis of morphology, that snakes descended from lizards. Molecular evidence reinforces this; it is hypothesized ... ( +view full text )
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However 150 million year old specimens readily definable as snakes with lizard-like skeletal structures have been uncovered in South America and Africa.[16] It has been agreed, on the basis of morphology, that snakes descended from lizards. Molecular evidence reinforces this; it is hypothesized that snakes share a common venomous ancestor with several lizard families, forming the Toxicofera clade.
