Genus: Kelumapusaura ROZADILLA, BRISSON-EGLI, AGNOLIN, ARANCIAGA-ROLANDO & NOVAS, 2022
Etymology: Mapudungu, kelumapu, "red earth" and Greek, sauros, "lizard."

Species: machi ROZADILLA, BRISSON-EGLI, AGNOLIN, ARANCIAGA-ROLANDO & NOVAS, 2022
Etymology: Machi refers to the shaman of the Mapuche people.

Holotype: MPCN-PV-807

Locality: Matadero Hill, Arriagada Farm, 70 km south of General Roca city, 39°30'12"S, 67°22'19"W, Rio Negro Province, Argentina.

Horizon: Upper Allen Formation Formation, Neuquen Group.

Biostratigraphy:

Age: Maastrichtian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material: Partial skull preserving the left maxilla with teeth, right prefrontal, right postorbital, left pterygoid, left prootic, predentary, 3 mandibular teeth, left dentary and the anterior end of the right dentary, a 3rd cervical vertebra, sacrum preserving sacrals 1, 2 and the anterior half of 3, a caudal neural arch, left sternal plate and a sternal rib.

Paratypes:

Locality: 23 m from the site that yielded the holotype, Matadero Hill, Arriagada FArm, 70 km south of General Roca city, 39°30'12"S, 67°22'19"W, Rio Negro Province, Argentina.

Horizon: Upper Allen Formation Formation, Neuquen Group.

Biostratigraphy:

Age: Maastrichtian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

MPCN-PV-808: Incomplete right dentary.

MPCN-PV-809: Sacral and caudal vertebrae.

MPCN-PV-810: Right scapula.

MPCN-PV-811: Left ilium.

MPCN-PV-812 (note, listed as 912): Right ischium

MPCN-PV-813: Right femur.

MPCN-PV0814: Metatarsal IV.