Aves
The Parrot family
What is the Psittaciformes
The Lizard family
What is Squamata?
The hoofed mammals
What are Ungulates?
The Frog family
What is Anura?
The family of Tyrannosaurus rex
What is the Tyrannosauria?
The weasel family
What is the Mustolidae
The armored dinosaurs
What is the Thyreophora?
The carnivorous dinosaurs
What is the Theropoda?
Any decedent of the most recent common ancestor of Megalosaurus, Iguanodon, and Diplodocus?
What is the Dinosauria?
The long-necked dinosaurs
What is the Sauropoda?