Elasmosaurus
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Elasmosaurus is a genus of plesiosaur that lived in North America during the Campanian stage of the Late Cretaceous period, at about 80.6 to 77 million years ago. The first specimen was discovered in
Officers at Fort Wallace, Kansas, in 1867. Theophilus H. Turner, who the same year discovered Elasmosaurus in the area, is second from left.
Back vertebrae of the holotype, 1869
Edward Drinker Cope's original 1869 reconstruction of Elasmosaurus, above, with the head on the wrong end and no hind-limbs, and holotype elements of E. platyurus (1–9) and E. orientalis (10), below
Cope's corrected 1870 reconstruction of Elasmosaurus, above
Futabasaurus
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Futabasaurus is a genus of plesiosaur from the Late Cretaceous of Fukushima, Japan. It was described and named in 2006, and was assigned to the family Elasmosauridae. The genus contains one species, F
Cast of fossils of Futabasaurus suzukii exhibited at the National Museum of Nature and Science
Pre-2006 skeletal mount which is informally labelled as "Wellesisaurus sudzuki" (with a large stone containing crinoids and ammonites in the background)
Placochelys BW