/ Thesaurus / G Synonyms of genus seismosaurus Find synonyms for: Noun1. Seismosaurus, genus Seismosaurus, reptile genususage: genus of large herbivorous dinosaurs of Cretaceous found in western North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: chicory Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language