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Re: Alvarezsaurus feet
>> Mononykus and "Ornithomimus" minutus have an arctometatarsus: I can show you
>> the slides of these. Alvarezsaurus does not. I do not know the condition
>> of the foot of Patagonykus.
>> If "Alvarezsauridae" is monophyletic, then the arctometatarsus probably
>> evolved independantly in this clade.
>What *does* the foot of _Alvarezsaurus_ look like? How robust is the
>case for placing _Mononykus_ and _Patagonykus_ in the Alvarezsauridae?
The foot of Alvarezsaurus is gracile, mtIII is moderately pinched (like
Apparently, forelimb, vertebral, and pelvic characters unite them. From
what I've heard, there are Mononykus-type arms in Patagonykus, at least.
Thomas R. Holtz, Jr.
Dept. of Geology
University of Maryland
College Park, MD 20742