|Named By:||Richard Owen in 1841|
|Time Period:||Late Cretaceous, 101-89.3 Ma|
|Location:||England, France and the USA, Texas|
|Size:||Roughly estimated at about 7 meters long|
|Fossil(s):||Teeth with some jaw material and vertebrae|
|Classification:||| Chordata | Reptilia | Sauropterygia | Plesiosauria | Pliosauroidea | Pliosauridae ||
Polyptychodon (meaning 'shaped fin tooth') is a genus of pliosaurid found Middle-Late Cretaceous marine deposits in southern England. It has been considered a nomen dubium in a 2016 review.