Linked from
The 23 pages that link to Avialae, each with the reason it gives.
BirdNarrower topic: It places living birds within a broader lineage of early bird relatives.
ConfuciusornisNarrower topic: Confuciusornis belongs to this broader lineage of bird-like dinosaurs.
HesperornisNarrower topic: Hesperornis belongs within the broad radiation of bird-line dinosaurs.
IchthyornisNarrower topic: Ichthyornis belongs to this bird-line dinosaur group.
AsteriornisNarrower topic: Asteriornis belongs within the broader evolutionary history of avialans.
PelagornithidaeNarrower topic: Pelagornithids were members of the broader bird lineage.
PresbyornisNarrower topic: Presbyornis belongs to the much broader evolutionary group of birds.