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Gorgo or Alberto?



Hi all;

Just wondering about the identity of a particular specimen, USNM 12814
(formerly AMNH 5428).Image here(I hope)
http://www.hrw.com/science/si-science/biology/animals/burgess/dino/gorgo.html

In two recent papers by Currie,  ( the Gaia paper on gregarious
tyrannosaurs and Nature paper on tyrannosaur growth rates - I'm away
from my references and precise titles and dates  escape me) it is
identified as Gorgosaurus in one and Albertosaurus in the other. So
which is it?

Just curious...
Bruce