Re: Discovery tonight ... 8 pm

[James Stearns <jstea003@odu.edu>]

Not to mention the fact that dinosaurs didn't urinate like mammals;
rather, they left behind whitish guano like other diapsids.

On Sun, Dec 6, 2009 at 6:59 PM, David Marjanovic
<david.marjanovic@gmx.at> wrote:
>>  "Flying reptile Quetzalcoatlus...Howard also notes that the creatures
>>  had tremendous eyesight, seeing in ultraviolet to following[sic] the
>>  urine trails of its prey."
>>
>>  ...
>>
>>  What?
>
> That's what extant raptors do with rodents: urine, or at least rodent urine,
> absorbs UV and is therefore bright ultra-yellow. Seeing UV is plesiomorphic
> for at least Osteichthyes, so it's reasonable to assume that pterosaurs in
> general and *Q.* in particular retained this capability... but stating as a
> matter of fact that they used it this way... two words: Faux Noise.
>