ORDER RHYNCHOCEPHALIA(noun)Did you mean?RhymesAlso try..orderDefinitions There is 1 meaning of the phrase Order Rhynchocephalia. Order Rhynchocephalia - as a noun Tuataras; extinct forms from middle triassic Synonyms (Exact Relations)rhynchocephaliaWord Variations & RelationsStarts OStarts ORStarts ORDStarts ORDEEnds AEnds IAEnds LIAEnds ALIAStarts O & ends AStarts OR & ends AStarts O & ends IAA-Z Proximitiesordalium11ordaliums12ordeal7ordeals8order6 Order Rhynchocephalia order-chenopodialesorderable12ordered9orderer8orderers9