Mononykus and Avimimus

["Tim Williams" <T.Williams@cclru.randwick.unsw.edu.au>]

George Olshevsky wrote: 

> _Avimimus_--which shares a number of features with _Mononykus_ and
> could well be closely related; compare the hind limb bones of the
> two genera, for example).
 
I can't believe no one has thought of this before!  They're both small
arctometatarsalians, superficially bird-like, large olecranon process,
and with (putative) carpometacarpi.  There's no need to go all the way
down to Patagonia to find the closest relative of _Mononykus_.

Who came up with the notion that _Avimimus_ is a chimera - I hadn't
heard of that before.