Genus: Prejanopterus VIDARTE & CALVO, 2010
Etymology: The generic name is a combination between the name of the village where it was discovered, Prejano, La Rioja Province, Spain, and Greek, ptero-, pteron, "wing."

Species: curvirostris (VIDARTE & CALVO, 2010) emend PEREDA-SUBERBIOLA, KNOLL, RUIZ-OMENACA, COMPANY & TORCIDA FERNANDEZ-BALDOR, 2012 (Type)
Note: Pereda-Suberbiola, et al., (2012) emended the species ending from the feminine ending to the masculine ending, in accordance to the masculine genus name. They followed ICZN Article 34.2 to change the species name.
= Prejanopterus curvirostra VIDARTE & CALVO, 2010
= Prejanopterus curvirrostra FUENTES VIDARTE, MEIJIDE CALVO, & TORCIDA FERNANDEZ-BALFOR, 1999 (nomen nudum)
Etymology: The species name, curvirostra, refers to the curved shape of the face.

Holotype: F.A. 112

Locality: Fuente Amarga, Prejano, La Rioja Province, Spain.

Horizon: Leza Formation, Enciso Group.

Biostratigaphy:

Age: Lower Aptian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: Fragment of rostrum, mandible, quadrate, quadratojugal, distal condyle, left ilium, ischium, pubis, femur, distal fragment of tibia, and fragment of first phalanx of manual digit IV.