Aptychodon

Aptychodon Temporal range: Late Cretaceous, Turonian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Teeth from the holotype of A. cretaceus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Superorder:	†Sauropterygia
Order:	†Plesiosauria
Genus:	†Aptychodon von Reuss, 1855
Type species
†Aptychodon cretaceus von Reuss, 1855

Aptychodon (meaning "unwrinkled tooth") is an extinct genus of plesiosaur from the Late Cretaceous of the Czech Republic. The type species is A. cretaceus.^[1]

The holotype consists of incompletely preserved teeth and they were discovered at White Mountain near Prague, Czech Republic.^[2][3] They were then sent to the Prague Museum before von Reuss (1855) described the teeth and created the species Aptychodon cretaceius.^[3]

The teeth of Aptychodon are conical and curved towards one side despite mostly being straight. They also measure between 2.5 centimetres (0.98 in) and 13 centimetres (5.1 in) in length.^[3]

Aptychodon has been classified as a potential synonym of Polyptychodon interruptus by later authors.^[1] Most authors classify Aptychodon within a basal position in Plesiosauria.

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• List of plesiosaur genera

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