Re: Tyrannosaurus errata

[drury@telusplanet.net]

Jeffery Martz wrote:

> I would also like the ref
> for the original study  that determined that the spacing of the ears in
> mammals determines the frequency of sound they hear best; wide spacing =
> lower frequency.

Try the following.
Heffner, Rickye, and Henery Heffner. "Hearing in the Elephant (Elephas
maximus)." Science  208 (1980): 518 - 520

For more detail on the same study try
Heffner, Rickye, and Henery Heffner. "Hearing in the Elephant (Elephas
maximus): Absolute Sensitivity, Frequency Discrimination, and Sound 
Localization." Journal of Comparative and Physiological Psychology 
96, No. 6 (1982): 926 - 944

I hope this helps.

Della Drury
drury@telusplanet.net