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Re: SQUIRRELS - FLYING AND OTHERWISE
In a message dated 95-12-08 00:41:37 EST, firstname.lastname@example.org (D.W.Naish)
>Incidentally, a while back George said (or at least implied) that we would
>hard pressed to put a life mode to an extant rodent, with *only* bones to go
>Arboreal squirrels have reversible ankles, curved claws and long, balancing
>tails, making it obvious that they are arboreal... ground squirrels
>chipmunks, marmots, prairie-dogs etc), though admittedly representing
>grades between arboreal and fully terrestrial modes, tend to lose flexible
>ankles, their claws become broader and longer, and the tail has become the
>marmot one. It's not difficult to assign a lifestyle to any one of these
>found as a fossil.
It's nice to be corrected in the BCF direction! Reversible ankles, you say?!