Possible Clues:

• Dinosaur
• Dinosaur on which Monty Python had a theory
• Dinosaur whose name means 'thunder lizard'
• Old browser? A bot runs ours loosely
• Large dinosaur
• Vegetarian in difficulty on US bar tours
• With 105-Across, 'What walks on four dino legs in the morning, four dino legs at noon and four dino legs in the evening?' and other riddles?
• Dinosaur with a long neck and tail
• Large herbivorous dinosaur
• Huge herbivorous Jurassic reptile