Rheosaurus

Rheosaurus sulcarostrum is a species of lizard in the family Gymnophthalmidae. The species is endemic to Guyana. It is monotypic in the genus "Rheosaurus".
Habitat.
"R. sulcarostrum" is found in leaf litter on the floor of high-canopy rainforest.
Geographic range.
"R. sulcarostrum" has been found in northwestern Guyana at low elevation. Because of its secretive habitat, it is likely to be found elsewhere.