Genus: Aerosteon SERENO, MARTINEZ, WILSON, VARRICCHIO, ALCOBER & LARSSON, 2008
Etymology: Greek, aeros, "air" and Greek, osteon, "bone"; named for the extreme development o fpneumatic spaces in skeletal bone.

Species: riocoloradensis SERENO, MARTINEZ, WILSON, VARRICCHIO, ALCOBER & LARSSON, 2008
Etymology: In reference to the Rio Colorado (Spanish), Mendoza Province, Argentina and Latin, ensis, named for the site of discovery of the holotype.

Holotype: MCNA-PV-3137

Locality: Canadon Amarillo, S37.5°, W 70.5°, north of Cerro Colorado, 1 km north of the Rio Colorado, near the southern border of Mendoza Province, Argentina.

Horizon: Anacleto Formation, Neuquen Group.

Biostratigraphy:

Age: Santonian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material: 1 maxillary or dentary crown, left prefrontal, right postorbital, left quadrate, posterior portion of the left pterygoid, right prearticular, partial ro complete vertebrate, incluid C1, D3, C4, C6, C7, D1, D4-11, D14, S2-5, CA1, one mid and distal caudal centrum, several cervical adn dorsal ribs, gastralia, furcula, left scapulocoracoid, left ilium and right and left pubis.

Referred material:

MCNA-VP-3138: Left metatarsal II.

MCNA-VP-3139: Articulated left tibia, fibula, astragalus, and calcaneum lacking only the proximal end of the fibula.