Note 657 — Chapter XVII
Reading edition
Reduced from figures accompanying Dr. Gibbes’s Memoir "On the Mosasaurus and three allied new genera," (with plates,) in the Smithsonian Contributions, vol. ii. 1849. This interesting paper comprises much information regarding the Mosasaurians of the Cretaceous deposits of N. America; but we cannot fully coincide with the author in his palæontological determinations.