| Aerosteon Temporal range:
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|---|---|
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| Skeletal diagram illustrating air-filled bones | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | †Megaraptora |
| Family: | †Megaraptoridae |
| Genus: | †Aerosteon Sereno et al. 2009 |
| Type species | |
| †Aerosteon riocoloradensis Sereno et al. 2009
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Aerosteon is a genus of megaraptoran dinosaur from the Late Cretaceous period of Argentina. Its remains were discovered in 1996 in the Anacleto Formation, which is from the late Campanian.[1] The type and only known species is A. riocoloradensis. Its specific name indicates that its remains were found 1 km (0.6 miles) north of the Río Colorado, in Mendoza Province, Argentina.
They show evidence of a bird-like respiratory system.[1] Aerosteon's name can be translated as air bone and derives from Greek ἀήρ (aer, "air") and ὀστέον (osteon, "bone").
- ^ a b Sereno, P.C.; Martinez, R.N.; Wilson, J.A.; Varricchio, D.J.; Alcober, O.A.; Larsson, H.C.E. (2008). Kemp, Tom (ed.). "Evidence for Avian Intrathoracic Air Sacs in a New Predatory Dinosaur from Argentina". PLOS ONE. 3 (9): e3303. Bibcode:2008PLoSO...3.3303S. doi:10.1371/journal.pone.0003303. PMC 2553519. PMID 18825273.