Apply Online for the 2014 High Use Season Multi-Day River Permit Lottery
Starting December 1, 2013 through January 31, 2014 , boaters can apply for the lottery for the 2014 high use season multi-day river permits through Recreation.gov. More »
Ely Creek Backcountry Campsites Closed
The Ely Creek backcountry campsites located along the Jones Hole Trail have been closed until further notice due to bear activity in the area. More »
About Rhadinosteus parvus:
Rhadinosteus is a small Jurassic frog with a body length of about half an inch. Its name means "small slender bone." It was found in pond deposits and was probably aquatic. Like all modern frogs, it was a carnivore and probably fed on small insects.
Why is Rhadinosteus parvus a superstar?
Rhadinosteus has only ever been found at Dinosaur. It is the only complete frog from the Morrison and one of few complete frogs from anywhere in the Jurassic. Usually only fragments of frog bone are found as fossils. However, a slab that was found at Dinosaur contains over a dozen skeletons.Although it can be challenging to see the individual frogs' shapes in the slab, close inspection reveals mostly complete specimens.
Jurassic Fact: Because they all died as they were metamorphosing, the Rhadinosteus skeletons do not have fully adult anatomy.
For more information: Visit the Quarry Exhibit Hall where a cast is on display. A cast of the Rhadinosteus slab is also on display at the Carnegie Museum of Natural History in Pittsburgh, Pennsylvania.
Did You Know?
Do you know the difference between a petroglyph (pictured here) and a pictograph? Petroglyphs are images pecked into rock while pictographs are painted images. Dinosaur National Monument preserves both forms of Native American rock art.