T. rex and the World of the Tyrannosaurs Wiki

Teratophoneus (meaning Monstrous Murderer) is an extinct genus of tyrannosaur that is closely related to Dynamoterror (meaning Powerful Terror) and Lythronax (meaning King of Gore). It contains a single species, Teratophoneus Curriei, which lived from 80.9-70.6 MYA.