Jon Barber wrote-
> Carinatae,
At least two: - Node-based: *Ichthyornis* + Neornithes. - Apomorphy-based: keel on sternum in all members of the population (so *Confuciusornis* is just outside).
Three: (Neornithes <- Hesperornis) (Cracraft, 1986)
What's the reference for the *Ichthyornis* + Neornithes definition?
Chiappe, 1995.
David Marjanovic wrote-
Was Euornithes really coined by Sanz & Buscalioni 1992? I've never seen that used, and I really like Sereno's definition (...apart from the lack of *Enantiornis*).
Mickey Mortimer