Archaeopteryx_lithographicaAbchiornis_huxleyiSinovenatorMei_longSinornithoides_youngiSinusonasusTroodon_formosusSaurornithoides_mongoliensisLinhevenator_taniPhilovenatorOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Xu_etal_2012bb