[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: nocturnal Archaeopteryx
On Wed, Apr 7th, 2010 at 1:13 AM, "Richard W. Travsky" <firstname.lastname@example.org>
> darn interesting
> When Lars Schmitz at the University of California, Davis, studied 77
> species, he found he could predict the foraging lifestyle of any
> simply by measuring the bones that their eyes are set in.
While I'd be cautious projecting modern avian morphometric trends back as far
nocturnal early avians certainly makes a lot of sense. It's thought that modern
bats might have
become nocturnal in order to avoid direct competition with birds, and early
avians would have had
to compete with far more accomplished pterosaurian fliers. That assumes that
mostly diurnal creatures though.
Also, at a time when bus-sized predators roamed about, I suspect that anything
the size of a
chicken would have taken great comfort in the cover of darkness (be it early
theropod, or mammal for that matter).
GIS Specialist Australian Dinosaurs
Melbourne, Australia http://home.alphalink.com.au/~dannj