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Re: feathers, hair and Compsognathus
Jeffrey Martz wrote:
> Since _Archaeopteryx_ lacks a beak, wouldn't this then imply that beaks
> developed covergently, possible several times, within the Dinosauria? Or are
> we talking about a reversal?
We're talking about a trait that evolved independently in several
dinosaur groups. To my knowledge, the most primitive sauropodomorphs
(thecodontosaurids), the most primitive theropods (herrerasaurs) and
even the most primitive ornithischians (lesothosaurids?) were beak-
> What would an theropod be doing with a beak AND teeth?
> Predentatans apparently used the beaks to crop and the teeth to chew
> but theropods do not have chewing teeth. Oviraptor and caegnathids
> did away with the teeth almost entirely, didn't they?
Except the so-called "palatal teeth" in _Oviraptor_.
> LN Jeff