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Re: No Subj. (long feathers)



In a message dated 11/22/1996 9:12:45 AM, longrich@stardot.com (Nick
Longrich) wrote:

> it [super-long bird feather] could concievably be aerodynamic, a double
> version of the rhamphorhynch tail. 

Or visa versa, the rhamph tail could be decorative, a sign of sexual maturity
(it did change shape with increased size). The aerodynamic theory is an old
paradigm recently upset by work using bipedal lizards showing the long thin
stiff tail of early pterosaurs was a terrestrial adaptation that quickened
the stride rate.

David Peters