The deserts

18 million years post-establishment:

The small lizards that were seeded on Terrasauria 18 million years ago have diversified greatly. Some of these new groups have evolved and adapted to extreme temperatures and harsh environments such as the desert. The picture shows three desert lizard species from different groups that evolved on the desert, the eyezards, the kobras and the dimetrosaurs. The eyezards are one of the lizards that least changed and looks more like its ancestor, the iberian common lizard. These reptiles have evolved a bigger skin surface on the tail to dissipate more heat, the tail is also used for intimidating predators like the dimetrosaurs. The eyezards evolved from the brachtiles. Under the sand of this desert there is a clade that creates burrows for surviving the heat. the kobras are a clade of sneks that evolved more skin on the neck. All of these lizards are small in size, but a group of big lizards called the slowzards has adapted to the desert, reaching sizes of one meter, the dimetrosaurs are the top preadators of these harsh environments.

As time passes, This world of lizards will enter into the last part of the saurocene. The late saurocene.