specimen YPM 40313. In 1891, Marsh made Anchisaurus major a separate genus, Ammosaurus, the "sand saurian". In the same publication he named YPM 1883/YPM 40313...

Genus Species Location Stratigraphic position Material Notes Images Ammosaurus Ammosaurus cf. major Arizona Dilophosaurus D. wetherilli Utah Attributed trackways...

papers. Marsh named the following dinosaur genera: Allosaurus (1877) Ammosaurus (1890) Anchisaurus (1885) Apatornis (1873) Apatosaurus (1877) Atlantosaurus...

Altispinax (mentioned) Anchisaurus (briefly identified by its synonym Ammosaurus) Ankylosaurus Apatosaurus Aragosaurus Archaeopteryx Argentinosaurus (mentioned)...

variation. Known specimens of "Fendusaurus" were previously classified as cf. Ammosaurus. The femora and coracoids also help identify different individuals, and...

Amargasaurus "Amargastegos" – nomen nudum Amargatitanis Amazonsaurus Ambopteryx Ammosaurus – junior synonym of Anchisaurus Ampelognathus Ampelosaurus Amphicoelias...

discussed. Animals mentioned: Coelophysis (species unknown) Semionotus Ammosaurus Anchisaurus Dilophosaurus Diplurus Fabrosaurids Trithelodonts (illustrated...

given unique numbers, but they collectively comprise a single holotype Ammosaurus major YPM 208 Yale Peabody Museum Hettangian Portland Formation, Connecticut...

Rhaetian?  England Possible junior subjective synonym of Thecodontosaurus. Ammosaurus Gen nov synonym Marsh Early Jurassic  USA ( Connecticut) ( Massachusetts)...

officially identified in North America; the other three are Anchisaurus and Ammosaurus from the Early Jurassic of the Connecticut River Valley, and Seitaad of...