 A. amplexus was named by Gregory S. Paul for giant Morrison allosaur remains , and included in his conception Saurophagus maximus ( later Saurophaganax ) . A. amplexus was originally coined by Cope in 1878 as the type species of his new genus Epanterias , and is based on what is now AMNH 5767 , parts of three vertebrae , a coracoid , and a metatarsal . Following Paul 's work , this species has been accepted as a synonym of A. fragilis . 
 A. amplexus was named by Gregory S. Paul for giant Morrison allosaur <a href='uninflect' title='1'><mark>remains</mark></a> , and included in his conception Saurophagus maximus ( later Saurophaganax ) . A. amplexus was originally coined by Cope in 1878 as the type species of his new genus Epanterias , and is based on what is now AMNH 5767 , parts of three vertebrae , a coracoid , and a metatarsal . Following Paul <a href='null_genetive' title='2'><mark>'s</mark></a>work , this species <a href='been_done' title='3'><mark>has</mark></a> been accepted as a synonym of A. fragilis . 
A. amplexus was named by Gregory S. Paul fa giant Morrison allosaur remain , and included in his conception Saurophagus maximus ( later Saurophaganax ) . A. amplexus was originally coined by Cope in 1878 as da type species of his new genus Epanterias , and is based on wat is now AMNH 5767 , parts of three vertebrae , a coracoid , and a metatarsal . Following Paul  work , this species done been accepted as a synonym of A. fragilis .