Fossil Butte National Monument
Kemmerer, WY

Called “a small snake” from the Green River Formation
Photo by NPS

America’s Aquarium in Stone
Fossils from the Fossil Butte Member of the Green River Formation
include animals found about a subtropical lake where the “water conditions that excluded scavengers combined to preserve articulated skeletons (all bones are in place rather than scattered). Delicate fossils rarely preserved elsewhere, yield valuable scientific data.”
Fish, mammals, reptiles, amphibians, insects, and plants were preserved in volcanic ash.


Jurassic National Monument at the site of the
Cleveland-Lloyd Quarry
Cleveland, UT

The Cleveland-Lloyd Quarry has the densest accumulation of Jurassic dinosaur bones ever found over 15,000 and still digging. and one dinosaur egg. Two-thirds of the bones come from the giant carnivore Allosaurus as well as herbivores such as Stegosaurus, Camarasaurus, and Camptosaurus.
One dinosaur egg and 2 new species of dinosaur have also been found- Marshosaurus bicentesimus– a medium-sized therapod and Stokesosaurus clevelandi– a tyrannosauroid (a relative of T.rex).
Scientists are still digging from this quarry and hope to come up with a theory of how all these bones ended up disarticulated (in pieces)in one place.

Allosaurus– the most common dinosaur bones found at the Cleveland-Lloyd Quarry

Where are the Dinosaur Fossils Nearest You?

by Cindi Sirois Collins
When writing my book Dinosaurs and Ancient Animals of Big Bend Texas, I used the Paleobiology Database to find fossil localities in the Big Bend area. It is an interactive site that can help you find where dinosaurs, mammals, and other ancient animal and plant fossils have been found around the world!
When using the PBDB Navigator, https://paleobiodb.org/navigator/  first, take a “Walkthrough” to learn how the website works.
Select a geologic time period, then a continent, country or city and click on the colored dots to see what fossils have been found.

If you are looking for a particular dinosaur or animal- go to the left menu and click on the “beetle” icon put in the genus-species name ex.) Tyrannosaurus rex. The genus Tyrannosaurus will pop up- click on that and it will light up the map with places (dots) where paleontologists have found Tyrannosaurus and its relatives.

You can enjoy this website in so many ways! Have fun!
The people who put this site together (University of Wisconsin-Madison / Geosciences and NSF) want to know that you like it so, if you can, let them know at admin@paleobiodb.org.

The Paleobiology Database (PBDB) can show you where dinosaurs were found near you!


Ashfall Fossil Beds State Historical Park near
Royal, Nebraska

See Rhinos, Camels, and Horses Preserved in Volcanic Ash.
Dr. Voorhies and his wife discovered this fossil bed in 1971.


A Hands-On Experience in Fossils & Geology
Morrison, CO

Florissant Fossil Beds National Monument