Talk:Leshansaurus

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It's not a carnosaur

Contrary to the pdf by li et al, this taxon doesnt really seem to be a sinraptorid, not even a carnosaur. Cau and mortimer pointed out it's a (megalosaurid?) megalosauroid instead That's what the theropod database says on the matter "Li et al. (2009) assigned this taxon to Sinraptoridae, but Cau (online, 2009) referred it to Megalosauridae instead, as the sister taxon to Megalosaurus. As he noted, the elongate anterior maxillary ramus, lack of medial fenestrae in the antorbital fossa, long frontal, only slightly decurved paroccipital processes, and long dorsal centra are all more similar to megalosauroids than sinraptorids. In addition, I note a ventral keel is present in the sacra of Megalosaurus and "Brontoraptor", and the medial acetabular ridge is a megalosauroid synapomorphy in Benson's analysis. A more precise placement and revised diagnosis must await a detailed study."

Cau's post http://theropoda.blogspot.com/2009/12/leshansaurus-li-et-al-2009-sinraptoride.html