A new species of elasmosaur from the Aptian of Colombia and a review of the Cretaceous plesiosaurs /
Welles, Samuel P., 1909-1997.
A new species of elasmosaur from the Aptian of Colombia and a review of the Cretaceous plesiosaurs / By S.P. Welles. - Berkeley ; Los Angeles : University of California Press, 1962. - 89 p. illus., 4 plates. ; 26 cm. - University of California publications in geological sciences, v. 44, no. 1 .
Bibliography: p. 82-87.
Plesiosauria.
Paleontology--Cretaceous.
Paleontology--Colombia.
A new species of elasmosaur from the Aptian of Colombia and a review of the Cretaceous plesiosaurs / By S.P. Welles. - Berkeley ; Los Angeles : University of California Press, 1962. - 89 p. illus., 4 plates. ; 26 cm. - University of California publications in geological sciences, v. 44, no. 1 .
Bibliography: p. 82-87.
Plesiosauria.
Paleontology--Cretaceous.
Paleontology--Colombia.