Genus: Proa MCDONALD, ESPILEZ, MAMPEL, KIRKLAND & ALCLA, 2012
Etymology: Spanish, proa, "prow," in reference to the pointed shape of the predentary.

Species: valdearinnoensis MCDONALD, ESPILEZ, MAMPEL, KIRKLAND & ALCLA, 2012
Etymology: In reference to Val de Arifio, Teruel Province, Spain, the traditional name of the coal mining area around the municipality of Arifio, near which the fossils were discovered, and Latin, -ensis, 'from'.

Holotype: AR-1/19

Locality: Site AR-1, Mina Santa Maria, Arifio, Teruel Province, Spain.

Horizon: Middle Interval with Coal, Lower Sedimentary Succession, Esucha Formation.

Biostratigraphy:

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

Material: A partial skeleton consisting of a disarticulated but associated skull including the premaxillae, partial maxillae, quadrates, supraorbitals, articulated braincase and skull roof, predentary, left dentary, and partial right surangular.

AR-1-2012: Right dentary.

AR-1-2013: An isolated tooth.

AR-1-2014: Several unprepared bones.

Paratypes:

AR-1/48: A disarticulated bue associated skull.

AR-1-1364, AR-1-1367, AR-1-1373-AR-1-1376, AR-1-1380, AR-1-1382-AR-1-1386, AR-1-1395.

AR-1-1365, AR-1-1366: Right dentary.

AR-1-1383: Left dentary.

AR-1-1369-AR-1-1372, AR-1-1378, AR-1-1379: 6 isolated teeth.