It differed from earlier forms , such as Petrolacosaurus , in that its teeth were larger and blunter ; possibly they were used for cracking insect carapaces .
Araeoscelis was around 60 centimetres ( 2.0 ft ) long , and superficially resembled a modern lizard .
Araeoscelis differed from earlier forms , such as Petrolacosaurus , in that Araeoscelis ' teeth were larger and blunter ; possibly they were used for cracking insect carapaces .
Araeoscelis was around 60 centimetres ( 2.0 ft ) long , and superficially resembled a modern lizard .