[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Now, does this suppose that these theropods are already feathered when they
enter the water? Because if they aren't, I see no pressure for them to
evolve feathers, once aquatic. What made theropods special from, say,
icthyosaurs and mosasaurs? They didn't evolve feathers. And animals with
covering that spend most of their time in the water tend to reduce the size
of their covering, both in length (penguin) and total area (cetaceans). It
seems like the pressure in an aquatic environment is biased against the
begining of flight.
Also, on the comment earlier about segnosaurs; if they were saurapodamorphs,
even with their dino-fuzz, then what implications does this have for the
origin of fuzz (is it a basal character, like mammal fur?), and what would
this mean for BCF?
Student of Geology
Northern Arizona University
P.O. Box 20840
Flagstaff, Az. 86011
"A _Coelophysis_ with feathers?"
Get your FREE download of MSN Explorer at http://explorer.msn.com