Brontosaurus

Brontosaurus is a sauropod dinosaur that lived in the Late Jurassic period.

The Lost World
Challenger struggles to show his friends that dinosaurs still exist in the plateau and as Professor Arthur Summerlee begins sit down it was to be the tail of Brontosaurus which is proof that dinosaurs are still alive. As the explorers begin seeing a herd of Brontosaurus on the plains and one a Pteranodon flies around Challenger tells Malone to bring the camera to take photos. The next day, Challenger and Malone go on the hot air balloon to continue more photos of Brontosaurus up in the air.

Trivia

 * In reality, Brontosaurus had it's neck position held down horizontally and it's tail raised off the ground.