Genus: Kookne NOVAS, AGNOLIN, ROZADILLA, ARANIAGA-ROLANDO, BRISSON-EGLI, MOTTA, CERRONI, EZCURRA, MARTINELLI, D'ANGELO, ALVAREZ-HERRERA, GENTIL, BOGAN, CHIMENTO, GARCIA-MARSA, LO COCO, MIQUEL, BRITO, VERA, PEREZ LOINAZE, FERNANDEZ & SALGADO, 2019
Etymology: Mythological swan companion of the Aonikenk (Tehuelche, Argentina indigenous people) hero Elal.

Species: yeutensis NOVAS, AGNOLIN, ROZADILLA, ARANIAGA-ROLANDO, BRISSON-EGLI, MOTTA, CERRONI, EZCURRA, MARTINELLI, D'ANGELO, ALVAREZ-HERRERA, GENTIL, BOGAN, CHIMENTO, GARCIA-MARSA, LO COCO, MIQUEL, BRITO, VERA, PEREZ LOINAZE, FERNANDEZ & SALGADO, 2019
Etymology: Aonikenk (Tehuelche, Argentina indigenous people) language, yeut, “mountain.”

Holotype: MPM 21550

Locality: Kookne Site (Titanosaur tibia site [locality 2]), about 30 km to the SW of the town of El Calafate, Austral Basin, 50°29'25.51"S, 72°32'56.51"W, Santa Cruz Province, Argentina.

Horizon: Chorrillo Formation.

Biostratigraphy:

Age: Late Campanian-Early Maastrichtian Stage, Upper Senonian Sub-epoch, Upper Gulf Epoch, Late Cretaceous.

Material: incomplete right coracoid lacking sternal end and porximal end damaged.