The four-toed amapasaurus (Amapasaurus tetradactylus ) is a lizard that was discovered in 1970 by Osvaldo Rodrigues da Cunha. It is the only species in the genus Amapasaurus.
It has small atrophied legs. It is very similar to the genus Leposoma, except for the number of fingers. Amapasaurus tetradactylus has four digits, and the lizards of the genus Leposoma have five.
It lives on the forest floor and is diurnal.
Amapasaurus tetradactylus is oviparous.
