I.D for Jurassic marine reptile verts

[Jay11]

Hello, new to posting on the forum and fairly new to fossil hunting. Found these very nice marine reptile vertabrae near Osmington Mills, Dorset. All found close together washed out of the Kimmeridgian Clay I think...

 

Age: Oxfordian/Kimmeridgian? 163 - 152mya (both rock types there but I believe the clay cliffs above the beach are Kimmeridgian.

 

Can anyone confirm I have 2 different types (Plesiosaur & Ichthyosaur)? Also any guesses at what species they are likely to be or is it not possible to narrow down from a more generic Ichthyosaurus sp./ Plesiosaurus sp. ?

 

 

The "Plesiosaur" Vertebra, more chunky and flatter with pits on side. (Could this be a type of Pliosaur like Liopleurodon or Pliosaurus sp. ?)

 

 

 

 

 

[Jay11]

And what looks to be 2 similar Ichthyosaur verts, (from same location) with more concave disc shapes:

 

VERT No. 1

 

 

VERT No. 2

 

[RuMert]

Exactly, they look like 2 caudal ichthyosaur vertebrae (maybe the last one is a posterior trunk vert, depending on the number of rib facets, caudal have 1, trunk 2) and a plesiosaur dorsal. I doubt assigning them to a species is possible

[Jay11]

Thank you, that’s a great help! I will label them by genera then. Great to now know which part of spine they are from.