Possible Clues:

• Huge prehistoric monster
• Flipping Game Boy - I would secure a type unable to adapt
• Reptile is around, not really
• Is around, unfortunately, but is well out of date
• Barney, for one
• T. rex
• Person who didn't adapt is around, but confused
• 'Sounds as if the one that was dining perceived this could not be fresh, being extinct (8)'
• What's long gone is around, is around!
• Playing around is a thing of the past