List of U.S. state fossils

Most states in the US have designated a state fossil, many during the 1980s.

It is common to designate a fossilized species, rather than a single specimen or a category of fossils.

For example, in Arizona, the state stone is turquoise and the state dinosaur is Sonorasaurus thompsoni yet the state fossil is petrified wood.

The two first states to designate a state fossil were Nebraska and North Dakota, both in 1967.

Seven states and the District of Columbia still lack an explicit state fossil: