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Re: Alvarezsaur spurs (was Re: dino-lice)
On Tue, May 3rd, 2011 at 1:12 PM, Tim Williams <email@example.com> wrote:
> The numbat is an example of (1), given the lack of specialization in
> the forelimbs, and its phylogenetic affiliation with dasyuromorph
Genome sequencing of the thylacine suggests that the numbat may be their
closest living relative.
When you compare the two animals there are obvious physical similarities
(appart from size). They
even have very similar coat pattens.
As for their lack of forelimb specialisation, it seems that numbats usually
feed on termites that nest
in rotten logs. Their small size probably allows them to poke around inside
holes already formed in
the rotting logs, and even if a bit of digging is required it's generally a lot
easier to excavate
crumbling rotten wood than it is to make a hole in a concrete-like earthern
extraordinary tongue of theirs probably means that only a small breach in a log
is required for
them to get a meal anyway.
Spatial Data Analyst Australian Dinosaurs
Melbourne, Australia http://home.alphalink.com.au/~dannj