Boreopterus and Feilongus were found by Andres and colleagues in 2013 to be closely related to Cycnorhamphus, making them members of the Gallodactylidae as had been originally thought when Feilongus was discovered.
Boreopterus and Feilongus were determined by Andres and colleagues in 2013 to be closely related to Cycnorhamphus, placing them within the Gallodactylidae. This determination is consistent with previous beliefs about Feilongus when it was first discovered.