The U.S State of Florida is among the richest states for both terrestrial and marine fossils across several geological periods.

The U.S State of Delaware known for the Horseshoe Crab a living fossil, the Belemnite and the Dryptosauridae a T-rex relative.

The U.S State of Connecticut is known for its geodiversity and 1991 designation of Eubrontes Giganteus Early Jurassic dinosaur tracks.