Thread:Raptorek20/@comment-25296924-20140922040404/@comment-24612631-20140922222612

Tyranosaurus is a genus name, Rex is the species name. Similar to Panthera leones (Lion) and Panthera tigris (tiger).

Tyrannosaur as in Tyrannosauridae is the family name for the group that includes genuses such as Daspletosaurus, Albertosaurus and Tyrannosaurus.

Have you never heard of:

Kingdom, Phylum, Class, Order, Family, Genus, Species?