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...

Notosuchia

1. Anatosuchus 2. Araripesuchus 3. Simosuchus 4. Iberosuchus 5. Yacarerani

Ichthyosaurs (Ichthyosauria)

Ichthyosaurs were major components of Mesozoic marine ecosystems from the Early Triassic (Olenekian) until their extinction in the early Late Cretaceous (Cenomanian). Their wide geographic range in the Ea...

The Monster of Aramberri, Predator X, and other monster pliosaurs in the media and real.

During the past decade several dramatically named giant pliosaurs have hit the mainstream media, many claiming to be the biggest yet discovered. ...

Plesiosauroids (Plesiosauroidea)
1. Thalassomedon hanningtoni 2. Futabasaurus suzukii 3. Plesiosaurus dolichodeirus 4. Elasmosaurus platyurus
The plesiosauroids were sea-going reptiles with long neck and small heads filled with long sharp...

Yet another possible contender for the title is Ornithocheirus, which allegedly had a 12-meter (39-foot) wingspan. However, specimen of this size have not been formally described in the literature. Ornithocheirus is a pterosaurgenu...

Pterosaurs (Pterosauria)

Firstly a pterosaur is not a dinosaur, the pterosaurs evolved from a different line to the one that gave rise to the dinosaurs. Nor are pterosaurs the ancestors of birds. Enough complete fossil evidence now e...

Carnivorous Mammal like Reptiles

1. Lycaenops 2. Eotitanosuchus 3. Gorgonops 4. Estemmenosuchus

Non-mammal synapsids and therapsid
 
The first vertebrates on land were amphibians descended from fish, and during the Carboniferous Period one branch of these amphibians became the amniotes – vertebrates that laid eggs speciall...

Ornithopods (Ornithopoda)

The Ornithopoda are a group of medium to large plant-eating dinosaurs. They include one of the earliest discovered dinosaurs, Iguanodon, as well as the famous crested and "duck-billed" hadrosaurs. Several of ...

Ceratopsians (Ceratopsia)
Ceratopsians were ornithischians, or "bird-hipped" dinosaurs. The oldest ceratopsians appeared at the beginning of the Cretaceous, about 140 million years ago. In the Late Cretaceous, about 100 million years ag...