Genus: Allkaruen CODORNIU, CARABAJAL, POL, UNWIN, & RAUHUT, 2016
Etymology: Genus name from the native Tehuelche, all, "brain" and karuen, "ancient."

Species: koi CODORNIU, CARABAJAL, POL, UNWIN, & RAUHUT, 2016
Etymology: Name from Tehuelche, koi, "lake," referring to the lacustrine setting of the type locality.

Holotype: MPEF-PV, 3609, 3613, 3615 

Locality: La Lluvia, Canadon Carrizal, Cerro Condor, Chubut Province, Argentina.

Horizon: Canadon Asfalto Formation.

Biostratigraphy:

Age:Latest Early-early Middle Jurassic.

Material:

MPEF-PV 3609: Mandible.

MPEF-PV 3613: Braincase.

MPEF-PV 3615: Cervical vertebra.

Referred material:

MPEF-PV 3616: Mid cervical vertebra.