Nanosaurus

Nanosaurus

Nanosaurus
Temporal range: Late Jurassic, 155–148 Ma
Reconstructed skeleton cast, Dinosaur Journey Museum
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: †Ornithischia
Clade: †Genasauria
Clade: †Neornithischia
Family: †Nanosauridae
Marsh, 1877b
Genus: †Nanosaurus
Marsh, 1877a
Species:
†N. agilis
Binomial name
Nanosaurus agilis
Marsh, 1877
Synonyms
Genus synonymy
  • Drinker Bakker et al., 1990
  • Othnielia Galton, 1977
  • Othnielosaurus Galton, 2007
Species synonymy
  • Drinker nisti Bakker et al., 1990
  • Laosaurus consors (Marsh, 1894)
  • Nanosaurus rex (Marsh, 1877)
  • Othnielia rex (Marsh, 1877)
  • Othnielosaurus consors (Marsh, 1894)

Nanosaurus ("small or dwarf lizard") was an ornithopod dinosaur that measured about 4 ft (1.1 m) long, weighing about 50 pounds (22.5 kg). Nanosaurus had a horny beak and a small skull with self-sharpening cheek teeth. Nanosaurus may have had cheek pouches.

This plant eater was bipedal (walked on two legs). It had thin legs and a stiffened tail that gave it speed and agility. It had five-fingered hands and four-toed feet, all clawed. It had large eyes and short arms. Nanosaurus resembled Hypsilophodon. Its fossils (two partial skeletons and teeth) were found in Colorado and Utah in rocks of the Late Jurassic age.


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