California is the #1 state with the most dinosaur fossils

Humans' fascination with dinosaurs goes back at least 2,000 years to Chinese writings describing what were thought to be massive dragon bones. In the 17th century, an English museum curator discovered a large thigh bone he posited was from a human giant. The first scientific designation of a group of animals called dinosaurs came about in the 1840s. 1993's blockbuster "Jurassic Park" drove our 20th-century obsession with dinosaurs into overdrive. And with each new fossil discovery and dinosaur movie release, our intrigue with these prehistoric predators only grows.

Every American state has searched its soil for dinosaur fossils, but some states have more old dinosaur bones than others. Anyone lucky enough to stumble on some is likely to strike pay dirt: The world's most complete T. rex skeleton fetched a record-setting $31.8 million in a 2020 auction.

To determine which states have the most dinosaur fossils, Stacker consulted the Paleobiology Database, a non-profit public resource that brings together fossil records from research institutions around the world. Data is current as of May 2022. We pulled all records labeled "Dinosauria" (the dinosaur clade) and sorted them by state. It is important to note that these records do not comprehensively reflect all dinosaur fossil records in the U.S., but rather represent a sample via the fossils available in public collections.

Read on to see how many dinosaur fossils have been found in your state, or check out the national list here.

California by the numbers

- Total fossils recorded in PBDB: 1,988
- Genus with the most fossils: Phalacrocorax (89 fossils)
- Time period with the most fossils: Late Pleistocene (747 fossils)

The Natural History Museum of Los Angeles County has a collection of more than 300 fossils and 20 fully reconstructed dinosaurs on display in the Jane G. Pisano Dinosaur Hall. The only two known fossils from Augustynolophus, a duck-billed plant-eater, were discovered near Fresno around 1940, becoming California's state dinosaur in 2017. More than 100 digs have been performed in the La Brea Tar Pits, including one to install a parking garage in 2006 that uncovered a nearly full Columbian mammoth.

Five states—Kentucky, New Hampshire, Rhode Island, Vermont, and Wisconsin—have no dinosaur fossils recorded by the PBDB. These states were mostly below sea level during the time dinosaurs roamed the Earth, leaving little sediment to preserve fossils. Glacial erosion also contributed to the lack of bones.

Along with the most prominent time period, the genus with the most fossils is provided for each slide. A dinosaur's genus encompasses multiple species with similar characteristics. Stegosaurus, Tyrannosaurus, and Diplodocus are three of the nearly 300 valid dinosaur genera.

Continue reading to discover which states have the most dinosaur fossils.

States with the most dinosaur fossils

#1. California: 1,988 total fossils recorded in PBDB
#2. Wyoming: 1,118 total fossils recorded in PBDB
#3. Montana: 940 total fossils recorded in PBDB
#4. New Mexico: 935 total fossils recorded in PBDB
#5. Florida: 895 total fossils recorded in PBDB