Iuticosaurus

Name: Iuticosaurus ‭(‬Jute lizard‭)‬.
Phonetic: yut-e-co-sore-us.
Named By: J.‭ ‬le Loeuff‭ ‬-‭ ‬1993.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Sauropoda,‭ ‬Titanosauria.
Species: I.‭ ‬valdensis‭ (‬type‭)‬.
Diet: Herbivore.
Size: Unknown due to overall lack of fossils.
Known locations: England,‭ ‬Isle of Wight Wessex Formation.
Time period: Barremian of the Cretaceous.
Fossil representation: Caudal‭ (‬tail‭) ‬vertebrae.

       Iuticosaurus is a genus of titanosaurian dinosaur,‭ ‬though one that is widely regarded as dubious.‭ ‬Why it is dubious stems all the way back to‭ ‬1887‭ ‬when Richard Lydekker named two caudal vertebrae‭ (‬BMNH R146a‭ ‬ and‭ ‬BMNH‭ ‬151‭) ‬as belonging to the genus Onithopsis.‭ ‬His reason for this was that fossils of the tail of Onithopsis were not known,‭ ‬though others such as Harry Govier Seeley and John Hulke criticised this decision,‭ ‬because if Onithopsis tail vertebrae were not already established in relation to other fossils,‭ ‬then there was no way of knowing if these new caudal vertebrae truly belonged to Onithopsis.‭ ‬In addition to this a similarity to the caudal vertebrae of Titanosaurus was also noted.
       In‭ ‬1888,‭ ‬Lydekker moved the caudal vertebrae from Onithopsis‭ ‬into Titanosaurus as Titanosaurus sp.‭ ‬a,‭ ‬while also moving a third vertebra‭ (‬BMNH‭ ‬32390‭) ‬into Titanosaurus sp.‭ ‬b.‭ ‬Then in‭ ‬1929,‭ ‬Friedrich von Huene named these as distinct species of‭ ‬Titanosaurus,‭ ‬with BMNH R146a and BMNH‭ ‬151‭ ‬becoming T.‭ ‬valdensis and BMNH‭ ‬32390‭ ‬becoming T.‭ ‬lydekkeri.‭ ‬Then nothing much happened until‭ ‬1993‭ ‬when Jean le Loeuff re-described these two species as a new genus called Iuticosaurus.‭ ‬This made Titanosaurus Valdensis and Titanosaurus lydekkeri into Iuticosaurus Valdensis and Iuticosaurus lydekkeri,‭ ‬however,‭ ‬le Loeuff soon considered I.‭ ‬lydekkeri to be a nomen dubium.
       Currently,‭ ‬Iuticosaurus is only represented by two caudal vertebrae that don’t really present much more than a generic titanosaurian form,‭ ‬which has led others to speculate that the Iuticosaurus genus is itself dubious.

Further reading
-‭ ‬On certain dinosaurian vertebrae from the Cretaceous of India and the Isle of Wight.‭ ‬-‭ ‬Quarterly Journal of the Geological Society of London‭ ‬43:‭ ‬157‭–‬160.‭ ‬-‭ ‬R.‭ ‬Lydekker‭ ‬-‭ ‬1887.
-‭ ‬Catalogue of fossil reptilia and Amphibia in the British Museum.‭ ‬Pt.‭ ‬I.‭ ‬Containing the orders Ornithosauria,‭ ‬Crocodilia,‭ ‬Dinosauria,‭ ‬Squamata,‭ ‬Rhynchocephalia,‭ ‬and Proterosauria.‭ ‬-‭ ‬British Museum of Natural History,‭ ‬London.‭ ‬-‭ ‬R.‭ ‬Lydekker‭ ‬-‭ ‬1888.
-‭ ‬Los saurisquios y ornitisquios del Cretáceo Argentino.‭ ‬-‭ ‬Anales del Museo de La Plata‭ (‬series‭ ‬3‭) ‬3:‭ ‬1‭–‬196‭ ‬-‭ ‬F.‭ ‬von Huene‭ ‬-‭ ‬1929.
-‭ ‬European titanosaurids.‭ ‬-‭ ‬Revue de Paléobiologie,‭ ‬Volume Spéciale‭ ‬7:105-117‭ ‬-‭ ‬J.‭ ‬Le Loeuff‭ ‬-‭ ‬1993.
-‭ ‬Découverte d'Hadrosauridae‭ (‬Dinosauria,‭ ‬Ornithischia‭) ‬dans le Maastrichtien des Corbières‭ (‬Aude,‭ ‬France‭)‬.‭ ‬-‭ ‬Comptes Rendus de l'Academie des Sciences,‭ ‬Série II‭ ‬316:‭ ‬1023-1029.‭ ‬-‭ ‬J.‭ ‬le Loeuff,‭ ‬E.‭ ‬Buffetaut,‭ ‬M.‭ ‬Martin,‭ ‬V.‭ ‬Martin‭ & ‬H.‭ ‬Tong‭ ‬-‭ ‬1993.



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