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Re: Tomia Re: Question: Why did birds lose their teeth?
On Wed, Mar 12th, 2014 at 1:31 AM, "Richard W. Travsky" <firstname.lastname@example.org>
> What about tomia? For those birds that have them it would indicate there
> is some sort of need for this functionality, and not for those who don't
> have them.
Indeed. There are modern birds that would actually benefit from having teeth,
but it seems that
tooth loss in extant birds is non-reversable. Tomial 'teeth' in the beak seem
to be as close as they
can get, given the genes they've had to work with.
Parrots are another interesting case. They have robust jaws and massive jaw
muscles, in stark
contrast to that of the average passerine. The beaks of red-tailed black
cockatoos or palm
cockatoos are definitely not the place you'd want your finger to be (the latter
species sporting some
impressive tomial 'teeth'). Whereas the skull of a starling would pop like
bubble wrap if squeezed
between finger and thumb (something not all that different to what they try to
do to each others'
skulls in a fight).
Spatial Data Analyst Australian Dinosaurs
Melbourne, Australia http://home.alphalink.com.au/~dannj