The spinosaurus did not walk on two legs. It could stand on its hind legs for very short periods of time but fossils the most recent fossils found have proved the the pelvis of the spinosaurus was in fact way too small to support walking on two legs for very long at all.

Just because Jurassic part showed it walking on two legs doesn't make it true. That just meant that they hadn't found all of the right pieces, which is very common so they would piece it together with other similar creatures.

Sorry Jurassic park lol. not part