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RE: Campbell's even crazier than a MANIAC? (archeopteryx climbing)

--- Tim Williams <twilliams_alpha@hotmail.com> schrieb am Mo, 22.9.2008:

> especially when there's no elongated,
> reversed hallux on the other side of the foot.

Indeed, indeed, indeed! I would consider investing in Morgan Stanley stock a 
wiser decision that depending on Archie having had a backward hallux.

Forward to sideways, the angle between toe I and IV 90-150°ish. And of course 
not so firmly attached that it could not, with a bit of decomposition, flap 

I do not know any backtoeless (other toes may be co-opted instead of a lost 
hallux) perchers among living birds, and there are backtoeless species in 
abundance. There might be one or two, but I am not aware of any off the top of 
my head. Vertical-climbers, it's possible  but you need a different style of 
climbing and are not very mobile.

There are backfinger- and -toeless "perching" mammals and others aplenty, but 
they have less restricted hip joint movement, bringing us back to where we 


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