Avetheropoda was named by Gregory S. Paul in 1988, and was first defined as a clade by Currie and Padian in 1997, to include Allosaurus, modern birds, and other animals descended from their most recent ancestor.
The term "Avetheropoda" was introduced by Gregory S. Paul in 1988 to describe a group of animals.  Currie and Padian later defined it as a clade in 1997, encompassing Allosaurus, modern birds, and other animals related through their most recent common ancestor.