RE: Bathygnathus is Dimetrodon

["Thomas R. Holtz, Jr." <tholtz@umd.edu>]

Yes, they did: the citation is in the references as being "in press".

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu         Phone: 301-405-4084
Senior Lecturer, Vertebrate Paleontology
Office: Geology 4106, 8000 Regents Dr., College Park MD 20742
Dept. of Geology, University of Maryland
http://www.geol.umd.edu/~tholtz/
Phone: 301-405-6965
Fax: 301-314-9661              

Faculty Director, Science & Global Change Program, College Park Scholars
Office: Centreville 1216, 4243 Valley Dr., College Park MD 20742
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        8000 Regents Drive
                        University of Maryland
                        College Park, MD 20742-4211 USA 


> -----Original Message-----
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On Behalf Of 
> Jaime Headden
> Sent: Monday, November 23, 2015 11:03 PM
> To: dinosaur@usc.edu
> Subject: Re: Bathygnathus is Dimetrodon
> 
> Do they suggest an appeal to the ICZN to use its plenary powers and set aside 
> Bathygnathus? Because I'd rather a pro forma on the
> subject than just "a reversal of precedent."
> 
> On Mon, Nov 23, 2015 at 8:44 AM, Ben Creisler <bcreisler@gmail.com> wrote:
> > Ben Creisler
> > bcreisler@gmail.com
> >
> > A new paper:
> >
> > Kirstin S. Brink, Hillary C. Maddin, David C. Evans & Robert R. Reisz
> > (2015) Re-evaluation of the historic Canadian fossil Bathygnathus
> > borealis from the Early Permian of Prince Edward Island.
> > Canadian Journal of Earth Sciences (advance online publication)
> > doi: 10.1139/cjes-2015-0100
> > http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2015-0100?src=rec
> > sys#.VlNBn3arTcs
> >
> > The holotype and only known specimen of Bathygnathus borealis is a
> > partial snout with maxillary dentition of a presumed sphenacodontid
> > from the Lower Permian (Artinskian 283–290 Ma) redbeds of Prince
> > Edward Island, Canada. Due to its incomplete nature, assessment of the
> > taxon’s systematic position within a cladistic analysis had never been
> > performed. However, recent recognition of the phylogenetic utility of
> > tooth characters in sphenacodontids now allows for a modern
> > phylogenetic evaluation of B. borealis. Results show that B. borealis
> > is the sister taxon of Dimetrodon grandis, which is supported by
> > dental characters: crowns with mesial and distal denticles and roots
> > elongate, lacking plicidentine. An autapomorphy of B. borealis is the
> > large facial exposure of the septomaxilla. As Bathygnathus has
> > priority over Dimetrodon in the scientific literature, we suggest a
> > reversal of precedence is required to preserve the familiar name
> > Dimetrodon and to maintain universality, thus recognizing the new
> > species Dimetrodon borealis.
> >
> > ==
> >
> > News release:
> >
> > http://drexel.edu/now/archive/2015/November/Dimetrodon_Discovery/
> 
> 
> 
> --
> Jaime A. Headden
> The Bite Stuff: http://qilong.wordpress.com/
> 
> 
> "Innocent, unbiased observation is a myth" - P. B. Medawar (1969)