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Re: Taxonomic levels in birds

In a message dated 96-02-04 18:40:31 EST, pharrinj@PLU.edu (Nicholas J.
Pharris) writes:

>Yes, unlike you, George, I restrict Aves to the Arctometatarsalia and the 
>Euaves, the latter including the Alvarezsauridae, the Enantiornithes, and 
>the Ornithurae.
>Along with the Aves, Avialae contains the Archaeopterygiformes, which 
>includes the Archaeopterygidae and the Dromaeosauridae.
>The Avialae and the Oviraptorosauria (Elmisauridae, Oviraptoridae, and, 
>*tentatively*, the Therizinosauroidea) are included in the Ornithomorpha.
>The Ornithomorpha and Ornitholestidae form the Maniraptora (although I 
>should probably rename this taxon--perhaps Avecheires?)
>Finally, the "Maniraptora" and, probably, the Dryptosauridae form the 

Confusion reigns.