http://en.wikipedia.org/wiki/Coelurosauria
The two most significant separations between subgroups are those between the Paraves andThe reason that there is a "significant separation" between Paraves and coelurosaur dinosaurs is because they are not related.othercoelurosaurs and between the paravian clades Avialae and Deinonychosauria.
Do you still consider Deinonychosauria a paravian clade?
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