semilunates in coelurosaurs

["Ken Kinman" <kinman@hotmail.com>]

Mickey,
    Will take me a while to digest all those characters in your neotheropod
posting---lots of food for thought.
     I thought that Allosaurus had a semilunate of two distinct elements
(perhaps explaining Sereno's coding for carnosaurs?).
    If Allosaurus and basalmost coelurosaurs had two unfused elements,
wouldn't Alxasaurus (two distinct but fused elements) just be a transitional
form on the way to those with a single completely fused element.  Another
transitional form is apparently a juvenile Deinonychus speciment at MCZ
(although I think I've heard it suggested that it may have had a single
fused semilunate that had broken in two??).  Are there other such
"transitional" forms of the semilunate?
    Is there any way to differentiate various forms of semilunate that
would be more phylogenetically useful?
                    -----Cheers, Ken
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