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Re: Coronosaurus, new ceratopsid genus for Centrosaurus brinkmani
splitting: getting worse...
----- Original Message -----
From: "Mike Keesey" <keesey@gmail.com>
To: "Dinosaur Mailing List" <dinosaur@usc.edu>
Sent: Friday, November 9, 2012 2:09:04 PM
Subject: Re: Coronosaurus, new ceratopsid genus for Centrosaurus brinkmani
On Thu, Nov 8, 2012 at 11:15 PM, Tim Williams <tijawi@gmail.com> wrote:
>
> Yes, _Archosaurus_ is now considered a basal archosauriform, but not
> an archosaur (sensu stricto). Nesbitt (2011) recovered it as a
> proterosuchid.
>
> Outside of Archosauria (way outside), another example of a genus named
> after a similar-named higher taxon is the fossil prototherian
> _Monotrematum_, originally assigned to the Monotremata.
> _Monotrematum_ is now often considered a junior synonym of
> _Obdurodon_. But if Monotremata is limited to the crown clade
> (_Ornithorhynchus anatinus_+_Tachyglossus aculeatus_), and
> _Obdurodon_/_Monotrematum_ lies outside of this clade (as some
> phylogenies have proposed), then the genus _Monotrematum_ would not
> belong in Monotremata.
Archosaurus is still in pan-Archosauria and Monotrematum is still in
pan-Monotremata, in any event.
--
T. Michael Keesey
http://tmkeesey.net/