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RE: Maniraptoran Tyrannosaurs



From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of Mickey Mortimer

Nicholas Gardner wrote-
 
Neocoelurosauria
 
 >  This is an unpublished name.  The correct term for this clade (Maniraptora + Ornithomimus) is Maniraptoriformes.
 
Indeed!!
 
|     `--Tyrannoraptora
|        |--Eumaniraptora
|        |  |?-Troodontidae
|        |  `--+--Aves
|        |     `--Dromaeosauroidea (implied in Matthew & Brown,
 
 > In this case, your Tyrannoraptora clade (Tyrannosaurus + Neornithes) would actually be termed Paraves (closer to  
> Neornithes than to Oviraptor). 
 
Not quite.  Paraves is a stem-based group, Tyrannoraptora is a node based.  In the phylogeny presented here, Paraves would be a stem-based clade represented solely by the node-based Tyrannoraptora.  However, should there be a taxon found closer to the tyrannoraptors than to Oviraptor, but outside Tyrannoraptora, it woulds still be paravian.
 
> Eumaniraptora (Deinonychus + Neornithes) would be one step higherthan you have it,  
> uniting Aves and "Dromaeosauroidea".   
 
Yes.
 
> Why do you use "Dromaeosauroidea" when Deinonychosauria (everything closer  
> to Deinonychus than to Neornithes) would work well here?
 
                 Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
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