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    Dinosaur

    National Monument CO,UT

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Dinochelys whitei

Artist rendition of Dinochelys.
Artist rendition of Dinochelys.
Walters & Kissenger, LLC
 

About Dinochelys whitei:

Paleontologists theorize that Dinochelys lived a life similar to that of modern river and pond turtles. It lived in or near water and probably ate plants, insects, and fish. Sadly, no skull has ever been found so it's difficult to know for sure. The smooth shell was used for protection and is the most common turtle part found as fossils.

 
Dinochelys specimens
(Left) The adult type specimen of Dinochelys is almost three times larger than the juvenile. The top end is where the heads would have been. (Right) The type specimen of Dinochelys is larger than the juvenile, but the juvenile has a well-preserved foot still attached. The top is where the heads would have been. Scale bars are 6 inches.
 

Why is Dinochelys whitei a superstar?

Both adults and juveniles have been found at Dinosaur. The adult is the Dinochelys holotype or type specimen. This means that it was the first of its kind ever found and described. The shell was determined to be so different from Jurassic turtles known at the time that it was named a new genus and species. Although the skull is missing from the type specimen, parts of the tail, neck, leg and foot were well preserved.

 
An adult Dinochelys flipper is almost the size of the juvenile’s entire shell!  Notice the extremely well preserved back foot on the juvenile. Scale bar is one inch.

An adult Dinochelys flipper is almost the size of the juvenile’s entire shell. Notice the extremely well preserved back foot on the juvenile. Scale bar is one inch.

The juvenile preserves the delicate finger-like bones of a foot as well as the shell. Although shells are fairly common in the Morrison, the small bones in the foot are rarely preserved. This specimen appears to have all the small bones in place and is exceptionally well preserved. Usually bones this small and delicate are washed away before they can be fossilized.

 

Jurassic Fact: The smooth shell without ornamentation distinguishes Dinochelys from other Jurassic turtles. This makes it possible to identify small fragments of its shell.

For more information: Visit the Quarry Exhibit Hall at Dinosaur where both a cast of the adult type specimen and the real juvenile will be on display. They will be the only Dinochelys specimens on display anywhere in the world!

Did You Know?

Picture of lizard resting on a rock.

Dinosaurs became extinct 65 million years ago, but lizards are still a common sight at Dinosaur National Monument. The small, inquisitive reptiles have endured on Earth for more than 300 million years, far outlasting their giant cousins.