Discosaurus is an extinct genus of Cretaceous plesiosaur first discovered in Alabama. http://www.oceansofkansas.com/Leidy1870b.html Bibliography and Catalogue of the Fossil Vertebrata of North America, Issue 179 by Oliver Perry Hay ...
Discosaurus A “disk (vertebra) lizard” from Late Cretaceous North America. Named by Joseph Leidy in 1852.