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Plesiosaur or Dinosaur?
as many of you know, I am trying to study motsly unpublished material
of Cuban Oxfordian vertebrates. This week I meet 3 articulated
vertebrae relatively big, labeled as plesiosauria by an old collector.
I will like listen to the general opinion of someone of you, about:
How I know if a vertebrae is Dinosaur or Plesiosaur? When a vertebrae
is Dinosaur and When is Plesiosaur ?
Please, sorry for my english.