Among unenlagiines is one of the largest dromaeosaurids, Austroraptor (5.8 metres), as well as some of the smallest, Buitreraptor and Rahonavis.
La Buitrera means, roughly, "the vulture-roost"; the genus Buitreraptor, a small bird-like dinosaur that must have been a predator of small vertebrates and possibly a scavenger was named after this.