Amphicoelias

Weighed as much as 20 African Elephants
Lived in what is now North America
Was Twice the length of a Blue Whale
Weighed 1400 times the average human
Probably could only walk 5 MPH or less

About Amphicoelias

Amphicoelias is a dinosaur which lived approximately 150 million years ago during the Jurassic Period. It was first discovered in 1877 by Oramel Lucas, an employee of E.D Cope. At the time of its discovery, it was one of the largest dinosaur specimens to have ever been found, but it was also extremely fragile. So fragile that Cope decided to name it Amphicoelias, a name which means “double hollow.”

This dinosaur was 200 feet long and over 125 tons in weight. It was an extremely large herbivore who must have had to consume large quantities of plant material to keep itself alive. As its name would indicate, this dinosaur also had hollow bones.

There is some controversy surrounding this dinosaur. The original backbone fossil on which E.D Cope based his findings on this dinosaur no longer exists and he may have exaggerated some of his claims about this fossil or may have made a clerical error as he tried to keep up with the frantic pace of discovery that was common during the Bone Wars of the 19th century. Some paleontologist now believe that this species doesn’t actually exist. That Amphicoelias is actually a Diplodocus. If that is true, then it would be a very interesting fact and would make this dinosaur very much like Seismosaurus, another dinosaur that is believed to be a Diplodocus.

If this dinosaur truly existed as its own species, then it would be one of the biggest dinosaur’s to have walked the Earth. If it is found out that it isn’t an Amphicoelias or that its measurements were exaggerated, then Argentinasaurus would be the biggest dinosaur species of all time.