Dyslocosaurus
- Pronunciation: diss-SLOH-kuh-SAWR-us
- Translation: Bad Place Lizard
- Order: Saurischia
- Suborder: Sauropodomorpha
- Infraorder: Sauropoda
- Family: Diplodocidae
- Length: 65.6 feet (20 meters)
- Period: Late Cretaceous
- Notes: Dyslocosaurus, discovered in Wyoming, is thought tobe the last of an unknown line of North American sauropods.The possibility exists that its remains have been improperly dated and that rather than being from the Late Cretaceous, it is actually from the Late Jurassic.