Here is the old skull that used to be on the "Brontosaurus". Compare it to the new skull that is now on the body.

Because the Apatosaurus was found first,it's name takes priority, and the name brontosaurus is not valid. But it is interesting to see how many people still use the name brotosaurus today.

Marsh, the man who found the bones in Wyoming way back in 1879, purposely assembled the heads incorrectly. The fact is, the body he found was headless. So he used the head of the closest dinosaur he could find. (Which was miles away not only in a different quarry, but in a different layer of strata).

It didn't matter to him that the head he found was already attached to another body (The body of a Camarasaurus).

This mistake lasted until 1975, when Dr. Jack Mc Intosh and Dr. David Berman proved to the scientific community that the Brontosaurus was actually the body of an Apatosaurus.

The name Apatosaurus means "Deceptive Lizard", though it is not because of the brontosaurus mix-up.

Many people pass on the same bad information that they themselves have been taught.

Consider this quote taken from the display notebook at Dinosaur National Park Museum, Vernal Utah.