The later discovery of Sapeornis skulls shows that they were indeed similar to Omnivoropteryx. This may make Omnivoropteryx a junior synonym of Sapeornis, and the name may be abandoned.
The identification of Sapeornis skulls has shown similarities between them and Omnivoropteryx, which implies that Omnivoropteryx might be considered a junior synonym of Sapeornis. As a result, the name for Omnivoropteryx may no longer be used.