RE: New Paper on the Roof

[Ivan Kwan <dino_rampage@hotmail.com>]

Interesting...

So _Hesperosaurus_ and _Wuerhosaurus_ have been sunk into _Stegosaurus? And 
looks like _Stegosaurus stenops_ is now supposed to be synonymous with _S. 
armatus._ So much for _Diracodon_...

Cheers,
Ivan

--
Those who dwell, as scientists or laymen, among the beauties and mysteries of 
the earth are never alone or weary of life.

- Rachel Carson

> Date: Tue, 13 May 2008 08:37:03 -0400
> From: tholtz@umd.edu
> Subject: New Paper on the Roof
> To: dinosaur@usc.edu
>
> Okay, I don't know if that one has been used yet, but it does reflect the
> following paper (a forthcoming article in J Sys Palaeontol):
>
> Susannah C. R. Maidment, David B. Norman, Paul M. Barrett and Paul Upchurch.
> In press. Systematics and phylogeny of Stegosauria (Dinosauria:
> Ornithischia). Journal of Systematic Palaeontology.
> doi:10.1017/S1477201908002459
>
> SYNOPSIS
>
> Stegosauria is a clade of ornithischian dinosaurs characterised by a bizarre
> array of dermal armour extending, in two parasagittal rows, from the
> cervical region to the end of the tail. Although Stegosaurus is one of the
> most familiar of all dinosaurs, little is known regarding the evolutionary
> history of this clade.
>
> Alpha-level taxonomic revision of all proposed stegosaur taxa shows that 11
> species of stegosaur can be regarded as valid on the basis of
> autapomorphies. These are: Dacentrurus armatus and Loricatosaurus priscus
> (gen. nov.) from Europe; Kentrosaurus aethiopicus and Paranthodon africanus
> from Africa; Tuojiangosaurus multispinus, Chungkingosaurus jiangbeiensis,
> Huayangosaurus taibaii, Gigantspinosaurus sichuanensis and Stegosaurus
> homheni (comb. nov.) from China; and Stegosaurus mjosi (comb. nov.) and
> Stegosaurus armatus from North America.
>
> A cladistic analysis of Stegosauria (the first to be based upon direct
> observation of all relevant specimens) is presented, which indicates that
> Tuojiangosaurus, Loricatosaurus and Paranthodon are sister taxa to
> Stegosaurus. Stegosaurinae can be defined as all stegosaurs more closely
> related to Stegosaurus than to Dacentrurus; Stegosauridae is defined as all
> stegosaurs more closely related to Stegosaurus than to Huayangosaurus; and
> Huayangosauridae can be defined as all stegosaurs more closely related to
> Huayangosaurus than to Stegosaurus. This study is also the first
> phylogenetic analysis to include Gigantspinosaurus, which is recovered as
> the most basal stegosaur.
>
>
>
> Thomas R. Holtz, Jr.
> Email: tholtz@umd.edu Phone: 301-405-4084
> Office: Centreville 1216
> Senior Lecturer, Vertebrate Paleontology
> Dept. of Geology, University of Maryland
> http://www.geol.umd.edu/~tholtz/
> Fax: 301-314-9661
>
> Faculty Director, Earth, Life & Time Program, College Park Scholars
> http://www.geol.umd.edu/~jmerck/eltsite/
> Fax: 301-405-0796
>
> Mailing Address: Thomas R. Holtz, Jr.
> Department of Geology
> Building 237, Room 1117
> University of Maryland
> College Park, MD 20742 USA
>

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