Archaeopteryx to be avialan and Anchiornis to be troodontid, but recovered Xiaotingia as the most primitive member of the clade Dromaeosauridae rather than a close relative of Anchiornis within Troodontidae. Cladogram following the results of a phylogenetic study by Lefèvre et al., 2017. In 2017 re-evaluation of the Harlem Archaeopteryx specimen, Xiaotingia is found to be an anchiornithid. See also Timeline of troodontid research References Late Jurassic dinosaurs of Asia Troodontids Jurassic birds Feathered dinosaurs Transitional fossils Fossil taxa described in 2011 Taxa named by Xu Xing Paleontology in Liaoning