|
Etrigansauria is just a junior synonym of Neoceratosauria, which is basically ignored by Delcourt. The phylogenetic taxonomy in this paper is horrible, ignoring Phylocode Article 11.7, ignoring earlier and better definitions than those of Wilson et al. (2003), redefining Ceratosauroidea as if it were Abelisauroidea, proposing definitions that only work in the topology being used, and citing incorrect definitions for Elaphrosaurinae, Noasaurinae and Furileusauria. More details on my blog-
http://theropoddatabase.blogspot.com/2018/06/etrigansauria-unnecessary-demon.html
Mickey Mortimer From: dinosaur-l-request@usc.edu <dinosaur-l-request@usc.edu> on behalf of Ben Creisler <bcreisler@gmail.com>
Sent: Wednesday, June 27, 2018 7:47 AM To: dinosaur-l@usc.edu Subject: [dinosaur] Etrigansauria, new clade of Ceratosauria (free pdf) Ben Creisler
A new paper:
New clade Etrigansauria means 'daemon lizard Etrigan', a daemon from DC Comics mythology.
Rafael Delcourt (2018)
Ceratosaur palaeobiology: new insights on evolution and ecology of the southern rulers.
Scientific Reports 8, Article number: 9730
Ceratosaur theropods ruled the Southern Hemisphere until the end of the Late Cretaceous. However, their origin was earlier, during the Early Jurassic, a fact which allowed the group to reach great morphological diversity. The body plans of the two main
branches (Noasauridae and new name Etrigansauria: Ceratosauridaeâ+âAbelisauridae) are quite different; nevertheless, they are sister taxa. Abelisaurids have lost the ability to grasp in the most derived taxa, but the reduced forelimb might have had some display
function. The ontogenetic changes are well known in Limusaurus which lost all their teeth and probably changed the dietary preference at maturity. The results presented here suggest that abelisaurids had different soft tissues on the skull. These tissues might
have been associated with evolution of a strong cervicocephalic complex and should have allowed derived taxa (e.g. Majungasaurus and Carnotaurus) to have low-displacement headbutting matches. The ability to live in different semi-arid environment plus high
morphological disparity allowed the ceratosaurs to become an evolutionary success.
=============
|