He found that alvarezsaurids were more parsimoniously related to the Ornithomimosauria .
Sereno ( 1999 ) performed a new analysis , revising the anatomical interpretations and clarifying the characters .
Sereno found that alvarezsaurids were more parsimoniously related to the Ornithomimosauria .
Sereno ( 1999 ) performed a new analysis , revising the anatomical interpretations and clarifying the characters .