Amphibians (Amphibia)

Amphibians were the first group of vertebrates to develop limbs and to be able to leave the water to conquer the land. Even if they are seen as simple and primitive animals by most people, amphibians show a w...

Eupelycosaurs

1. Cotylorhynchus 2. Aerosaurus 3. Dimetrodon 4. Mesenosaurus 5. Edaphosaurus

The largest seems to be the freshwater turtle Stupendemys, with an estimated total carapace length of more than 3.3 m (11 ft) and weight of up to 1,814–2,268 kg (3,999–5,000 lb

Stupendemys is a prehistoric genus of freshwa...

Turtles and tortoises (Testudines)

Turtles and tortoises comprise Order Testudines, evolutionarily one of the oldest groups of reptiles, which pre-dates the dinosaurs. The most prominent unifying characteristic of turtles is the prese...

Snakes

The term snake are commonly called the reptiles belonging to the suborder Serpentes (or Ophidia). The phylogeny of snakes is closely related to that of lizards (the common name for members of the suborder Sauria reptiles), ...

Lizards

Lizards, (suborder Sauria), any of more than 5,500 species of reptiles belonging in the order Squamata (which also includes snakes, suborder Serpentes). Lizards are scaly-skinned reptiles that are usually distinguished from sn...

Mosasaurus
1- Halisaurus, 2 - Pannoniasaurus, 3 - Plioplatecarpus, 4 - Carinodens, 5 - Globidens, 6 - Platecarpus, 7 - Plesioplatecarpus, 8 - Plesiotylosaurus, 9 - Yaguarasaurus, 10 - Clidastes, 11 - Hainosaurus, 12 - Liodon, 13 - Prog...

Crocodilians (Crocodyloidea)

1.Asiatosuchus 2. Pallimnarchus 3. Voay 4. Trilophosuchus 5. Volia

Gavialoidea

1. Thoracosaurus  2. Toyotamaphimeia  3. Ikanogavialis  4. Rhamphosuchus  5. Gryposuchus

Alligatoroidea
Alligators and Caimans.

Crocodiles and relatives (Crocodylomorpha) 

Crocodilians are truly iconic creatures, and throughout history have inspired stories of dragons and soul-devouring gods. Modern crocodilians are the crocodiles, alligators, caimans and ghar...

Rauisuchians and Phytosaurs

Battles between big carnivores are a rarity in the fossil record. One find from Triassic rocks in New Mexico reveals something incredible. It is a life-and-death duel between two of the era’s most pow...