_Deinonychosauria_: Only rarely do people use "dromaeosaur" to refer to this group, which may or may not include troodontids. Earliest published, well-known members are _Graciliraptor_, as well as _Mei_, _Sinovenator_, and _Sinusonasus_, if troodontids are deinonychosaurs. (Note that I said "published", though....)
In a few researchers' phylogenetic hypotheses, _Archaeopteryx_ is a deinonychosaur