Possible Clues:

• Cretaceous predator, briefly
• Natural history museum display, perhaps
• "The Lost World" menace
• 'Jurassic Park critter'
• "The Lost World" creature
• Fearsome creature of old, briefly
• Bygone terror, for short
• Jurassic Park "star"
• 1960-70s' glam rock band
• Jurassic Park menace