Sinopliosaurus fusuiensis
Source: http://teratophoneus.deviantart.com/art/Sinopliosaurus-fusuiensis-300778150
Name: "Sinopliosaurus fusuiensis"
Name Meaning: More Chinese Lizard
First Described: 1975
Described By: Hou, Yeh & Zhao
Classification: Dinosauria, Saurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Megalosauroidea, Megalosauria, Spinosauridae
Sinopliosaurus is interesting in that it actually is a plesiosaur genus from the Early Cretaceous of southern China. However this particular species is known from a tooth, which was found to be similar to the tooth of Siamosaurus, indicating that it isn't actually a plesiosaur. However it hasn't been officially named yet, so it's still being called Sinopliosaurus.
Source:
http://en.wikipedia.org/wiki/Sinopliosaurus_(dinosaur)
Shout out goes to mc74!