Aptychodon (meaning "unwrinkled tooth") is an extinct genus of plesiosaur from the Cretaceous of what is now the Czech Republic. The genus was named by Reuss in 1855. See also Timeline of plesiosaur research List of plesiosaur genera References Sepkoski, J.J. (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 363:1-560 External links Aptychodon in the Paleobiology Database Cretaceous plesiosaurs of Europe Extinct animals of Europe Fossil taxa described in 1855