from the GNU version of the Collaborative International Dictionary of English
- n. An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus.
from The Century Dictionary and Cyclopedia
- n. An American genus of extinct reptiles, of the order Sauropterygia, related to the plesiosaurs, but differing in the structure of the pectoral arch.
Sorry, no etymologies found.