Abstract: Many of the earliest discovered ornithurine birds from the Jehol Group in northeastern China are highly fragmentary; this current study on the only known specimen of Liaoningornis longidigitrus, first described by Hou in 1997, indicates the taxon is in fact a member of Enantiornithes. Although based on fragmentary and poorly preserved material, the absence of a well-developed sternum,lack of developed cnemial crests on the tibiotarsi and reduced pedal unguals suggests Liaoningornis should be excluded from the more advanced ornithothoracine clade. The taxon remains distinct from all known enantiornithines, although it shows similarity to the Spanish taxon Eoalulavis hoyasi; shared features of the sternum suggest a close relationship between these two, although disparity from other enantiornithines suggests this may be an artifact of ontogeny. TheLiaoningornis specimen is too fragmentary to be able to make strong inferences about its placement within the diverse enantiornithine clade.