Tyrannosaurus Redux: T. Rex Was More Than Just a Large Carnivore at Top of Food Chain

Just trying to establish how many tyrannosaur genera are known (a brief census if you will).

Proceratosaurus - mid Jurassic - UK - 10 ft
Iliosuchus? - mid Jurassic -UK - 5 ft
Kileskus - mid Jurassic -Russia - 10 ft
Guanlong - late Jurassic - China - 10 ft
Aviatyrannis - late Jurassic - Portugal - 9 ft
Coelurus? - late Jurassic - North America - 8 ft
Tanycolagreus? - late Jurassic - North America - 13 ft
Stokesosaurus - late Jurassic - North America/UK - 12 ft
Dilong - early Cretaceous - China - 5 ft
Xiongguanlong - early Cretaceous - China - 10 ft
Sinotyrannus - early Cretaceous - China - 33 ft
Raptorex - early Creataceous - China - 10 ft
Not Yet Named - early Cretaceous - Australia -10 ft
Eotyrannus - early Cretaceous - UK - 13 ft
Bagaraatan? - late Creataceous - Mongolia - 12 ft
Labocania? - late Cretaceous - Mexico - 20 ft
Dryptosaurus - late Cretaceous - North America - 20 ft
Appalachiosaurus - late Cretaceous - North America - 24 ft
Alectrosaurus - late Cretaceous - Mongolia - 17 ft
Bistahieversor - late Cretaceous - North America - 30 ft
Daspletosaurus - late Cretaceous - North America - 30 ft
Gorgosaurus* - late Cretaceous - North America - 30 ft
Albertosaurus - late Cretaceous - North America - 26 ft
Alioramus - late Cretaceous - Asia - 18 ft
Tarbosaurus - late Cretaceous - Asia - 40 ft
Nanotyrannus* - late Creataceous - North America -17 ft
Tyrannosaurus - late creataceous - North America - 42 ft

? indicate possible tyrannosaurs
* indicate heavily disputed genera

Wow, I had no idea there were so many. I'll have to do some more research to get myself up to date.
For the record, I have not included tyrannosaurs identified exclusively by tooth frgaments from areas where other more defined tyrannosaurs lived, as these are almost certainly nomen dubium.

Scientific American have a rather good slideshow of lesser known tyrannosaurs.