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Re: New Hualianceratops from Jurassic of China



Apparently there's something about these news items that is being
blocked. I'll try again.

http://gwtoday.gwu.edu/triceratops-gets-cousin



A video:

https://www.youtube.com/watch?v=bi_OLCLW4N4

On Wed, Dec 9, 2015 at 11:34 AM, Ben Creisler <bcreisler@gmail.com> wrote:
> OK, when I tried to forward this message with the added full
> reference, it was blocked. Don't know what the problem is. I'll try
> again
>
>
> Fenglu Han, Catherine A. Forster, James M. Clark & Xing Xu (2015)
> A New Taxon of Basal Ceratopsian from China and the Early Evolution of
> Ceratopsia.
> PLoS ONE 10(12): e0143369
> doi:10.1371/journal.pone.0143369
> http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143369
>
> Ceratopsia is one of the best studied herbivorous ornithischian
> clades, but the early evolution of Ceratopsia, including the placement
> of Psittacosaurus, is still controversial and unclear. Here, we report
> a second basal ceratopsian, Hualianceratops wucaiwanensis gen. et sp.
> nov., from the Upper Jurassic (Oxfordian) Shishugou Formation of the
> Junggar Basin, northwestern China. This new taxon is characterized by
> a prominent caudodorsal process on the subtemporal ramus of the jugal,
> a robust quadrate with an expansive quadratojugal facet, a prominent
> notch near the ventral region of the quadrate, a deep and short
> dentary, and strongly rugose texturing on the lateral surface of the
> dentary. Hualianceratops shares several derived characters with both
> Psittacosaurus and the basal ceratopsians Yinlong, Chaoyangsaurus, and
> Xuanhuaceratops. A new comprehensive phylogeny of ceratopsians weakly
> supports both Yinlong and Hualianceratops as chaoyangsaurids (along
> with Chaoyangsaurus and Xuanhuaceratops), as well as the monophyly of
> Chaoyangosauridae + Psittacosaurus. This analysis also weakly supports
> the novel hypothesis that Chaoyangsauridae + Psittacosaurus is the
> sister group to the rest of Neoceratopsia, suggesting a basal split
> between these clades before the Late Jurassic. This phylogeny and the
> earliest Late Jurassic age of Yinlong and Hualianceratops imply that
> at least five ceratopsian lineages (Yinlong, Hualianceratops,
> Chaoyangsaurus + Xuanhuaceratops, Psittacosaurus, Neoceratopsia) were
> present at the beginning of the Late Jurassic.
>
>
>
> ---------- Forwarded message ----------
> From: Ben Creisler <bcreisler@gmail.com>
> Date: Wed, Dec 9, 2015 at 11:25 AM
> Subject: Blocked post for new Hualianceratops?
> To: dinosaur@usc.edu
>
>
> Ben Creisler
> bcreisler@gmail.com
>
>
> I have tried to send a post about the new Jurassic ceratopsian
> Hualianceratops, but my posts have been blocked on the DML. Let me see
> if this post gets through before I try again.