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Re: Caudofemoralis and theropod limb proportions

Stephen Gatesy wrote:
>I think that a much stronger constraint is limiting femur length in birds.
>The lower limb elements are where proportions are freer to evolve.  If
>birds are selected for long legs (including long running legs), the
>tibiotarsus and tarsometatarsus elongate, whereas the femur remains more in
>size with the body.  The result is an ostrich or flamingo or stilt that has
>a tiny femur relative to the tarsometatarsus.
        How well established is this? I know that the femur is commonly used
as an indicator of body size, but I've always wondered how reliable this is.
      Jonathan R. Wagner, Dept. of Geosciences, TTU, Lubbock TX 79409
                    "They Airbrushed My Face" - REM