Name: Mantellisaurus ‭(‬Mantell’s liazrd‭)‬.
Phonetic: Man-tel-le-sore-us.
Named By: Gregory S.‭ ‬Paul‭ ‬-‭ ‬2007.
Synonyms: Heterosaurus‭?‬,‭ ‬Iguanodon atherfieldensis,‭ ‬Proplanicoxa galtoni‭?‬,‭ ‬Sphenospondylus‭?‬,Vectisaurus‭?‬.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Ornithopoda,‭ ‬Styracosterna,‭ ‬Hadrosauriformes.
Species: M.‭ ‬atherfieldensis‭ (‬type‭)‬.
Diet: Herbivore.
Size: About‭ ‬7‭ ‬meters long.
Known locations: England,‭ ‬Isle of Wight‭ ‬-‭ ‬Wessex Formation.
Time period: Barremian-Aptian of the Cretaceous.
Fossil representation: Several individuals,‭ ‬some of which are almost complete.

       Mantellisaurus was originally described as a species of Iguanodon,‭ ‬I.‭ ‬atherfieldensis,‭ ‬but in‭ ‬2007‭ ‬Gregory S.‭ ‬Paul renamed the species as new genus.‭ ‬Paul chose the name Mantellisaurus in honour of Gideon Mantell,‭ ‬the man who discovered and named Iguanodon.‭ ‬Mantellisaurus was capable of movement in either a quadrupedal or bipedal posture,‭ ‬and is noted for having a similarity with the dinosaur Ouranosaurus from North Africa.‭ ‬Trackways from the same location that the Mantellisaurus holotype fossils are known from indicate that Mantellisaurus travelled in family groups.

Further reading
-‭ ‬Turning the old into the new:‭ ‬a separate genus for the gracile iguanodont from the Wealden of England.‭ ‬-‭ ‬Horns and Beaks:‭ ‬Ceratopsian and Ornithopod Dinosaurs‭ ‬69-77.‭ ‬-‭ ‬Gregory S.‭ ‬Paul‭ ‬-‭ ‬2007.
-‭ ‬A revised taxonomy of the iguanodont dinosaur genera and species.‭ ‬-‭ ‬Cretaceous Research‭ ‬29‭ (‬2‭)‬:‭ ‬192‭–‬216.‭ ‬-‭ ‬Gregory S.‭ ‬Paul‭ ‬-‭ ‬2008.


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