Possible Clues:

• Natural history museum exhibit
• The Flintstones' snorkasaurus
• Member of the Rat Pack
• What a thesaurus ain't
• Bird's long-ago relative, informally
• Velociraptor or apatosaurus, for short
• Raptor or T. rex, e.g
• The old lizard's in love, subservient to daughter
• Snorkasaurus of cartoons
• T. rex or ankylosaurus, for short