However, usage of the neck frill in modern reptiles is better documented.

You'd think the examples of so many modern reptiles might have given them a hint.

However,some scientists mean that chelonians are more closely related to modern reptiles than to pareiasaurs.

They are found in frogs and modern reptiles.

Archaeopteryx is a transitional fossil, with features clearly intermediate between those of modern reptiles and birds.

When walking, the tail would have swung sideways, like in modern reptiles.

They found that there were striking differences in these measurements between modern reptiles and mammals.

Much like modern reptiles, there existed regional variations in the type and size of the scales that covered the mosasaurs.

The implication from such a find is that modern reptiles and birds arose from a common ancestor.

It is the fourth largest modern reptile behind three crocodilians.