Genus: Iberospinus MATEUS & ESTRAVIZ-LOPEZ, 2022
Etymology: Ibero-derived from the Roman name for the Iberian Peninsula, and Latin, -spinus, "spine", because the lenght of the neural spines is one of the main features that defided the clade to which the animal belongs to.

Species: natarioi MATEUS & ESTRAVIZ-LOPEZ, 2022
Etymology: In honor of Carlos Natario, who discovered the holotype.
= Baryonyx walkeri MATEUS, ARAUJO, NATARIO & CASTANHINHA, 2011 (referred material)
= Genus: Nova ML 1190 s per BARKER, HONE, NAISH, CAU, LOCKWOOD, FOSTER, CLARKIN, SCHNEIDER & GOSTLING, 2021

Holotype: ML 1190

Locality: Praia de Aguncheirus (also known as Praia do Guincho), Sesimbra municipality, Setubal District, (38.4°N, 9.2°W; paleocoordinates: 31.8°N, 1.3°E), Portugal.

Horizon: Papo Seco Formation.

Biostratigraphy:

Age: Early Barremian Stage, Early Gallic Subepoch, Early Cretaceous Epoch, Middle Early Cretaceous.

Material:

Breakdown as follows:

ML 1190-1: Anterior part of dentary.

ML 1190-2: Fragment of dentary.

ML 1190-3: Tooth.

ML 1190-4, 5: Fragmentary teeth.

ML 1190-6-8: Dorsal neural arch.

ML 1190-10: Partial right scapula.

ML 1190-11, 12, 28, 239: Proximal rib fragment.

ML 1190-13: Right pubis shaft.

ML 1190-14: Pubic peduncle.

ML 1190-15-17, 22: Anterior caudal vertebrae.

ML 1190-18: Mid-anterior caudal vertebra.

ML 1190-19, 25, 27, 240, 241: Posterior caudal vertebra.

ML 1190-20: Middle caudal vertebra (broken in half).

ML 1190-21: Fragmentary middle caudal vertebra.

ML 1190-23: Mid-posterior caudal vertebra.

ML 1190-26: Middle caudal vertebra.

ML 1190-31: Calcaneum.

ML 1190-32: Partial calcaneum.

ML 1190-34: Ungual pedal phalanx.

ML 1190-234: Dorsal vertebra.

ML 1190-275: Half posterior caudal vertebra.