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A fresh identified dinosaur had a splash , pug - like face and teeny arms , but that did n’t stop it from gobble up prey during the late Cretaceous , a unexampled report has set up .
The 16 - foundation - farsighted ( 5 meter ) predator , namedKoleken inakayal , was one of the top vulture in what is now Argentina .
Artist impression of the newly discovered dinosaur Koleken inakayali.
researcher unearthedK. inakayalifossils in the La Colonia Formation of primal Patagonia , according to a study published May 21 in the journalCladistics . K. inakayalibelonged to the Abelisauridae family , which ruled the great southern land mass of Gondwana during theCretaceous period(145 million to 66 million years ago ) .
" These guys were the vertex marauder in that part of the world , " study co - authorMichael Pittman , a paleontologist at The Chinese University of Hong Kong , told Live Science . " They were occupying the same office thatT. rexwould have been doing in parts of ancient North America . "
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Koleken inakayali’s skull.
Abelisaurids likeK. inakayalihad a similar — albeit smaller — body plan to aT. rex — with bulky hind limbs and scrubby blazonry . However , the skull of the new species was much flatter than those of its congenator . " If it was a hotdog , it would be a pug , " Pittman order .
Pittman and his fellow came acrossK. inakayalifossils sticking out of the distant Patagonian desert in 2015 and excavated them over several years . The squad recovered a partial skeleton in the cupboard of a single individual , which included skull castanets , fanny finger cymbals and near - complete leg , consort to astatementreleased by the National Geographic Society , which helped fund the enquiry .
K. inakayalilived alongside another abelisaurid , Carnotaurus sastrei , which was discovered in the same geological formation in 1985 and is notable for its horns .
K. inakayalilacked horns , one of several features researchers used to distinguish its skeleton fromC. sastreiand other abelisaurids . The newfound metal money was also small thanC. sastrei , which had a organic structure length of 26 feet ( 8 m ) , harmonize to theNatural History Museumin London .
The squad fix thatK. inakayalibelonged in its own mathematical group within the Abelisauridae family Sir Herbert Beerbohm Tree . Its genus name , " Koleken , " comes from a word in the Teushen voice communication speak by the native universe of central Patagonia . The original Teushen word , " Kóleken , " stand for " coming from clay and water supply , " which the investigator chose because the fogey were in claystone - command rock from an estuarine environment , according to the subject .
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The mintage name , " inakayali , " is named after Inakayal , a leader of the Tehuelche aboriginal peoplewho fought against the Argentinian military in the nineteenth hundred . " He [ Inakayal ] is known for his resistance against Argentina ’s Conquest of the Desert military hunting expedition , which resulted in the decimation and deracination of aboriginal community from Patagonia , " the author wrote in the report .
After identifyingK. inakayali , the team looked at abelisaurid evolution , and the charge per unit at which their organic structure commute over time liken to other dinosaurs . The researcher found that abelisaurids had speedy skull evolution , which in all likelihood contribute to their winner .
" One of the central ingredients for their achiever was they very speedily changed their skull configuration , and that opened up new opportunity for them , " Pittman aver .
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