Its remains were collected but not prepared by Barnum Brown in the 1910s, from rocks better known for their fossils of marine life. Ned Colbert, who described it, found it to have had more robust limbs and longer legs than related Rhamphorhynchus, although of a similar size and overall anatomy. He classified it as a rhamphorhynchid. It is the same animal as James A. Jensen and John Ostrom's Nesodon (1977). Although there is little overlapping material with contemporaneous Cacibupteryx, the two are clearly different based on details of the elbow and quadrate. At least one recent review suggests it was a rhamphorhynchid, while another does not classify it.