Anatomical studies , particularly studies of the most primitive troodontids , like `` Sinovenator '' , demonstrate striking anatomical similarities with `` Archaeopteryx '' and primitive dromaeosaurids , and demonstrate that they are relatives comprising a clade called Paraves .
Anatomical studies of the most primitive troodontids , like `` Sinovenator '' , demonstrate striking similarities with `` Archaeopteryx '' and primitive dromaeosaurids . This proves they are relatives : they are a clade called Paraves .