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RE: new paper on three African abelisauroids
Jose Ignacio Ruiz-Omeñaca wrote:
Proceedings: Biological Sciences
ISSN: 0962-8452 (Paper) 1471-2954 (Online)
Describes two new ceratosaurian genera:
_Spinostropheus gautieri_ (gen. et comb. nov.) based on material
(disarticulated vertebrae, partial left humerus and partial right tibia;
MNHN collection) originally described as _Elaphrosaurus gautieri_ (Lapparent
1960), plus referred vertebrae (MNN TIG6). This is a basal ceratosaurian of
Neocomian age, more derived than _Elaphrosaurus_ and _Ceratosaurus_.
_Spinostropheus_ is given as the sister taxon to the Abelisauroidea
_Rugops primus_ (gen. et sp. nov.), of Cenomanian age, is based on a
partial cranium lacking the posterolateral portions of the skull roof
and palate (MNN IGU1). This is a basal abelisaurid; the skull is textured
but hornless, and the skull roof is not thickened. _Rugops_ may be closely
related to an unnamed Patagonian abelisaur known only from a maxilla
(Lamanna et al. 2002).
The cladogram includes an expanded Noasauridae comprising _Deltadromeus_,
_Noasaurus_, _Masiakasaurus_, and an unnamed Gadoufaoua taxon.
_Laevisuchus_ and _Genusaurus_ are Abelisauroidea incertae sedis (no mention
of _Velocisaurus_). _Rugops_ and possibly _Ilokelesia_ are given as basal
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