Ichnogenus: Polyonyx SANTOS, MORATALLA & ROYO-TORRES, 2009
= Polyonyx SANTOS, MORATALLA, RODRIGUES & SANZ, 2004 (nomen nudum)
Etymology: Grteek, poly, "several" and Greek, onyx, "claw"; evidence of many claw marks.

Species: gomesi SANTOS, MORATALLA, RODRIGUES & SANZ, 2009 (Ichnotype)
= Polyonyx gomesi SANTOS, MORATALLA, RODRIGUES & SANZ, 2004 (nomen nudum)
Etymology: In memory and honor of Jacinot Pedro Gomes (1844-1916), curator of the Museu Mineralogico e Geologico da Escola Politecniea (Lisbon, Portugal), in the first naturalist to study in (1844) dinosaur tracks in Portugal (Bomes 1916).

Holotype: In situ.

Locality: Galinha tracksite, Municipal ara of Bairro, Serra de Aire, West-Central Portugal.

Horizon: Serrade Aire Formation.

Biostratigraphy:

Age: Bajocian Stage, Lower Dogger Epoch-Bathonian Stage, Middle Dogger Epoch, Middle Jurassic.

Material: 94 consecutive manus/pes prints.

Referred material:

Polyonyx isp

97 consecutive manus/pes prints.

3 more trackways.