rough-scaled plated lizard on the sand

africa ancient animal background biological biology brown closeup cold colorado colorful desert dinosaur dragon ectotermal family fauna gerrhosauridae gerrhosaurus great herpetology lacertidae lizard major nature oviparous plated plates poikilothermal predator reptile reptilia reptilian rock rough roughscaled sand scale scales skin small sudan texture vegetation vertebrate vivarium viviparous western wild wildlife zoology