"Tyrannosaurus (play /t??r?n??s?r?s/ or /ta??r?n??s?r?s/; meaning "tyrant lizard", from Greek τυρ?ννο? (tyrannos, "tyrant") and σα?ρο?' (sauros, "lizard"))"
Classified thusly:
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Dinosauria
Order: Saurischia
Suborder: Theropoda
Family: Tyrannosauridae
Tribe: Tyrannosaurini
Genus: Tyrannosaurus
Species: T. rex
Classified thusly:
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Dinosauria
Order: Saurischia
Suborder: Theropoda
Family: Tyrannosauridae
Tribe: Tyrannosaurini
Genus: Tyrannosaurus
Species: T. rex
The science actually points to Scow being partially correct. Chordates generally regarded as dinosaurs are the predecessors to modern-day avians, reptiles, and mammals. They gave rise to synapsids, which gave rise to therapsids, which gave rise to mammals. Birds evolved from theropods like raptors. Dinosaurs are generally considered to be reptiles by the scientific community, but evidence supports that most didn't conform with current classification. Sauropods, for instance, often had air sacs along their necks, similar to several species of bird. Classification is always difficult with precursors, particularly extinct ones.