from the GNU version of the Collaborative International Dictionary of English
- n.pl. Same as plesiosauria.
from The Century Dictionary and Cyclopedia
- An order of fossil saurians usually called Plesiosauria.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. extinct marine reptiles: plesiosaurs; nothosaurs
Sorry, no etymologies found.
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