''Discosaurus'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus of Cretaceous

plesiosaur The Plesiosauria (; Greek: πλησίος, ''plesios'', meaning "near to" and ''sauros'', meaning "lizard") or plesiosaurs are an order or clade of extinct Mesozoic marine reptiles, belonging to the Sauropterygia. Plesiosaurs first appeared ...

first discovered in Alabama by Joseph Leidy. It was argued to be the same animal as ''

Elasmosaurus ''Elasmosaurus'' (;) is a genus of plesiosaur that lived in North America during the Campanian stage of the Late Cretaceous period, about 80.5million years ago. The first specimen was discovered in 1867 near Fort Wallace, Kansas, US, and was se ...

''.

References

http://www.oceansofkansas.com/Leidy1870b.html Bibliography and Catalogue of the Fossil Vertebrata of North America, Issue 179 by Oliver Perry Hay Cretaceous plesiosaurs of North America Cretaceous plesiosaurs Cretaceous reptiles of North America Nomina dubia {{plesiosaur-stub

See also

References