Eoabelisaurus

Name: Eoabelisaurus
Phonetic: E-oh-ah-bel-e-sore-us.
Named By: Diego Pol‭ & ‬Oliver‭ & ‬Rauhaut‭ ‬-‭ ‬2012.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Theropoda,‭ ‬Abelisauridae.
Species: E.‭ ‬mefi‭ (‬type‭)‬.
Diet: Carnivore.
Size: Around‭ ‬6.5‭ ‬meters long.‭ ‬Possibly slightly larger.
Known locations: Argentina,‭ ‬Chubut Province‭ ‬-‭ ‬Canodon Asfalto Formation.
Time period: Aalenian/Bajocian of the Jurassic.
Fossil representation: Skull and almost complete post cranial skeleton.

       Discovered in‭ ‬2009‭ ‬and described in‭ ‬2012,‭ ‬Eoabelisaurus was a ground breaking discovery in our understanding of the abelisaurid theropods.‭ ‬So far most abelisaurids are known from the later stages of the Cretaceous period,‭ ‬yet the holotype Eoabelisaurus has been confidently assigned to the early stages of the Mid Jurassic.‭ ‬Also at around six and a half meters long,‭ ‬Eoabelisaurus was not the largest theropod of the time,‭ ‬but it was no lightweight either.‭ ‬Although so far lacking in other fossil deposits,‭ ‬this is a strong indication that the abelisaurid theropods were part of the Mesozoic landscape all the while that the megalosaurids,‭ ‬allosaurids,‭ ‬carcharadontosaurids,‭ ‬spinosaurids and even the tyrannosauroids at the end of the Cretaceous amongst many other types of theropod.‭ ‬This would indicate that the abelisaurid theropods were among the most successful of all of the known dinosaurs.
       As a mid-sized predator,‭ ‬Eoabelisaurus probably focused its attentions upon hunting similarly sized or smaller dinosaurs,‭ ‬including primitive sauropods and ornithiscian dinosaurs that would have been fairly common in South America during the Mid Jurassic.‭ ‬One thing of note however is that the holotype remains of Eoabelisaurus have been interpreted as being either from a subadult‭ ‬or adult individual.‭ ‬If the former is true,‭ ‬then it would be a realistic expectation that fully grown Eoabelisaurus would have been slightly bigger than the six and half meters for the holotype specimen.

Further reading
- A Middle Jurassic abelisaurid from Patagonia and the early diversification of the theropod dinosaurs [here]



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