Polyptychodon

Polyptychodon
Temporal range: Late Cretaceous,
P. interruptus jaw with tooth
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Sauropterygia
Order: Plesiosauria
Suborder: Pliosauroidea
Family: Pliosauridae
Clade: Thalassophonea
Subfamily: Brachaucheninae
Genus: Polyptychodon
Owen, 1841
Type species
Polyptychodon interruptus
Owen, 1841
Other species

Polyptychodon (meaning 'many-folded tooth') is a genus of pliosaurid found in Middle-Late Cretaceous marine deposits in southern England, France and Argentina. It has been considered a nomen dubium in a 2016 review.