Scream All You Want
Mike Keesey  

In the Mesozoic, No One Can Hear You Scream

January 10th, 2006 by Mike Keesey :: 6 Comments

Well, almost. Gleich et al. 2005 extrapolated an osteological indicator of hearing range (namely, the length of the basilar papilla) from living archosaurs (primarily birds, also crocodylians) to Allosaurus, Archaeopteryx, and Brachiosaurus. Archaeopteryx, a mere bantamweight, could have heard the same ranges as a modern bird. But bigger dinosaurs like Allosaurus and especially Brachiosaurus had ranges significantly lower than that of us humans. Allosaurus‘ range probably cut off at around 3 kHz, the average pitch of a human scream. With Carnotaurus being of similar size to Allosaurus, it’s probably reasonable to assume the same for Carney.

(Not that he cares….)

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