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T rex & smell
Without mentioning names, it has argued that the large olfactory bulbs on the
endocast of T rex indicate a well developed sense of smell, and that therefore
T rex could smell carrion a long ways (to simplify, a cast of the brain cavity
shows the region of smell to be very large). One problem with the claim is that
no comparisons were made with other dinosaurs to determine whether T rex is
abnormal in this regards. Having just finished the endocast of Camptosaurus, it
has huge olfactories as well. In fact, they are twice as wide as the brain
portion. We could argue as to why an ornithopod has such well developed sense
of smell, but obviously there is more to it than locating carrion.
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