Actually, a couple of recent phylogenetic analyses (my Ostrom Symposium
paper & more recent in press work) recovers this position. On the other
hand, Ollie Rauhut's (the other published analysis that includes
_Procerat._) does not.
I've not yet seen your Ostrom symposium paper (nor any of the others in that
volume) yet, so were they recovered as sister taxa or just in the same
polytomy?