[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Phytodinosauria status
In a message dated 6/6/01 8:53:51 PM EST, Mickey_Mortimer11@email.msn.com
<< Also, I see no reason ornithischians would have to evolve dinosaurian
characters independently of saurichians, as the near-universal consensus is
that Dinosauria is monophyletic and the two are sister groups. >>
For one thing, ornithischians have to lose the fifth toe independently of the
saurischians, since sauropods still have it. Not impossible, of course, but
it makes you wonder.
How odd to group obligatory quadrupedal dinosaurs with obligatory bipedal
dinosaurs, and leave facultatively bipedal dinosaurs outside these groups
instead of between them, where you might readily expect them to go.