Noasaurus

Name: Noasaurus ‭(‬Northwestern Argetnina lizard‭)‬.
Phonetic: No-ah-sore-us.
Named By: J.‭ ‬F.‭ ‬Bonaparte & J.‭ ‬E.‭ ‬Powell‭ ‬-‭ ‬1980.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Theropoda,‭ ‬Abelisauroidea,‭ ‬Noasauridae.
Species: N.‭ ‬leali‭ (‬type‭)‬.
Diet: Carnivore.
Size: Uncertain due to lack of remains,‭ ‬but roughly estimated to be about‭ ‬2.4‭ ‬meters in length.
Known locations: Argentina,‭ ‬Salta Province‭ ‬-‭ ‬Lecho Formation.
Time period: Maastrichtian of the Cretaceous.
Fossil representation: Partial skull and post cranial remains including finger and lower leg bones.

       Noasaurus is the type genus of the noasauridae,‭ ‬a side group of theropod dinosaurs that are thought to have had the same immediate origins as the abelisaurids‭ (‬such as Abelisaurus and Aucasaurus‭)‬.‭ ‬Noasaurus however is only known by very partial remains which makes it difficult to ascertain specific details about this dinosaur.‭ ‬At the time of its discovery,‭ ‬it was thought that Noasaurus had an enlarged claw on the foot,‭ ‬analogous to‭ ‬the sickle claws commonly seen on dromaeosaurs and troodonts such as Velociraptor and Troodon.‭ ‬However a‭ ‬2010‭ ‬study by Agnolin and Chiarelli has now reported that the correct position of the claw is actually on the hand.‭ ‬This would not mark the first time that such a mistake was made,‭ ‬the large theropod dinosaur Megaraptor was once thought to have had large sickle claws on its feet,‭ ‬just for them to later be realised as actually belonging on the hands.

Further reading
-‭ ‬A continental assemblage of tetrapods from the Upper Cretaceous beds of El Brete,‭ ‬northwestern Argentina‭ (‬Sauropoda-Coelurosauria-Carnosauria-Aves‭)‬.‭ ‬Mémoires de la Société Géologique de France,‭ ‬Nouvelle Série‭ ‬139:19-28.‭ ‬-‭ ‬J.‭ ‬F.‭ ‬Bonaparte & J.‭ ‬E.‭ ‬Powell‭ ‬-‭ ‬1980.
-‭ ‬The position of the claws in Noasauridae‭ (‬Dinosauria:‭ ‬Abelisauroidea‭) ‬and its implications for abelisauroid manus evolution.‭ ‬-‭ ‬Paläontologische Zeitschrift.‭ ‬-‭ ‬F.‭ ‬L.‭ ‬Agnolin‭ & ‬P.‭ ‬Chiarelli‭ ‬-‭ ‬2010.



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