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Re: More about Erickson et al. 2004
a major problem is the low sample size for subadults and juveniles. Gorgosaurus
is valid and distinct from Albertosaurus as redefined by Currie last year as I
Kenneth Carpenter, Ph.D.
Curator of Lower Vertebrate Paleontology &
Dept. of Earth Sciences
Denver Museum of Natural History
2001 Colorado Blvd.
Denver, CO 80205
For fun: http://dino.lm.com/artists/display.php?name=Kcarpenter
>>> Mickey Mortimer <Mickey_Mortimer111@msn.com> 11/Aug/04 >>>
A few things.
I thought AMNH 5428, AMNH 5432 and USNM 12814 were Gorgosaurus, not
I also thought LAG's were unreliable for absolute age measurements, as they
could be caused by trauma and seasons of unusually low nutrition too. But I
don't really follow the histological lit...
Could the aberrant growth trajectory of Tyrannosaurus be due to a few
species of different sizes being grouped together accidentally, ala
Olshevsky's hypothesis for Tarbosaurus?
Undergraduate, Earth and Space Sciences
University of Washington
The Theropod Database - http://students.washington.edu/eoraptor/Home.html