Genus: Aristosuchus SEELEY, 1887 (nomen dubium)
Etymology: Greek, aristos “best, superior” and Greek, suchus, "crocodile"; Superior crocodile.

Species: pusillus (OWEN, 1876) SEELEY, 1887
Etymology: Latin, pusillus,"tiny."
= Poekilopleuron pusillum OWEN, 1876 (nomen dubium)
= Poikilopleuron pusillus OWEN, 1876 (nomen dubium)
= Poikilopleuron pusillum OWEN, 1876 (nomen dubium)
= Poekilopleuron minor OWEN vide COPE, 1878 (sic)
= Poecilopleuron minor OWEN vide COPE, 1878 (sic)

Holotype: NHMUK PV (old BMNH) R178, a, b, R179

Locality: Isle of Wight County, England, Southern United Kingdom.

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

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

Material: 5 dorsal, sacral and 2 caudal vertebrae, pubes, fragmentary ungual.

A) Sacrum; B) Dorsal vertebra; C) Caudal vertebra; D) Ungual; E) Pubis.

Referred material:

NHMUK PV (old BMNH) R899: Part of a phalangeal.

GALTON, 1973

NHMUK PV (old BMNH) R181, BMNH 901: 4 cervical vertebrae.

NHMUK PV (old BMNH) 291: Natural mold of sacral series.

NHMUK PV (old BMNH) R5194: Femur.

NHMUK PV (old BMNH) R6426: Ischium.