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.
Andres and colleagues found Boreopterus and Feilongus in 2013 to be closely associated with Cycnorhamphus, thus establishing their membership in the Gallodactylidae. This conclusion aligns with earlier thinking when Feilongus was first identified.