In a message dated 7/2/03 7:49:23 AM Pacific Daylight Time, Dinogeorge@aol.com writes: << Should the species Albertosaurus megagracilis once again become generically distinct from Tyrannosaurus rex, the name Dinotyrannus is available for that species (if it's not in the genus Albertosaurus, either). >> Or Nanotyrannus, which also has priority over Dinotyrannus.