Name: Nanosaurus ‭(‬small lizard‭)‬.
Phonetic: Nah-noe-sore-us.
Named By: Othniel Charles Marsh‭ ‬-‭ ‬1877.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Nanosauridae.
Species: N.‭ ‬agilis‭ (‬type‭)‬.
Diet: Herbivore.
Size: Uncertain due to lack of good fossil remains,‭ ‬but possibly somewhere between‭ ‬1‭ ‬and‭ ‬2‭ ‬meters long.
Known locations: USA,‭ ‬Colorado‭ ‬-‭ ‬Morrison Formation.‭ ‬Maybe also Wyoming.
Time period: Late Jurassic.
Fossil representation: Based upon partial dentary and fragmentary remains of the skull and post cranial skeleton.

       Nanosaurus is an uncertain‭ ‬and some would say dubious genus of ornithopod dinosaur.‭ ‬In the past three species have been named for Nanosaurus,‭ ‬N.‭ ‬agilis,‭ ‬N.‭ ‬rex and N.‭ ‬Victor.‭ ‬The holotype of N.‭ ‬rex was used to create the genus Othnielia in‭ ‬1977,‭ ‬while N.‭ ‬victor was later realised to be based upon crocodilian remains.‭ ‬This means that the only valid species of Nanosaurus remaining is the type species,‭ ‬N.‭ ‬agilis,‭ ‬but because this is based upon such fragmentary remains,‭ ‬it is very difficult to ascertain genus specific features for this dinosaur.

Further reading
-‭ ‬Notice of some new vertebrate fossils.‭ ‬-‭ ‬American Journal of Science‭ (‬Series‭ ‬3‭) ‬14:249-256.‭ ‬-‭ ‬Othniel Charles Marsh‭ ‬-‭ ‬1877a.
-‭ ‬Notice of new dinosaurian reptiles from the Jurassic formations.‭ ‬-‭ ‬American Journal of Science‭ (‬Series‭ ‬3‭) ‬14:514-516.‭ ‬-‭ ‬Othniel Charles Marsh‭ ‬-‭ ‬1877b.
-‭ ‬Principal characters of American Jurassic dinosaurs.‭ ‬Part V.‭ ‬-‭ ‬American Journal of Science‭ ‬21:‭ ‬418‭–‬423.‭ ‬-‭ ‬Othniel Charles Marsh‭ ‬-‭ ‬1881.
-‭ ‬The ornithopod dinosaur Dryosaurus and a Laurasia-Gondwanaland connection in the Upper Jurassic.‭ ‬-‭ ‬Nature‭ ‬268:‭ ‬230-232.‭ ‬-‭ ‬Peter M.‭ ‬Galton‭ ‬-‭ ‬1977.
-‭ ‬Teeth of ornithischian dinosaurs‭ (‬mostly Ornithopoda‭) ‬from the Morrison Formation‭ (‬Upper Jurassic‭) ‬of the western United States‭ ‬-‭ ‬Peter M.‭ ‬Galton‭ ‬-‭ ‬In,‭ ‬Horns and Beaks:‭ ‬Ceratopsian and Ornithopod Dinosaurs.‭ ‬Indiana University Press:‭ ‬Bloomington‭ ‬-‭ ‬Kenneth Carpenter‭ (‬ed‭) ‬-‭ ‬2007.‭


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