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Re: New PaleoBios paper - diplodocoid phylogenetic taxonomy

At 08:38 PM 10/4/2005 +0000, Michael Mortimer wrote:
David Marjanovic 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?