What do we call the official fossil designated by a state to represent its geological history?

The term "State Fossil" refers to an official designation given by a state to a particular fossil that symbolizes its geological history and represents its natural heritage. States across the U.S. often select a state fossil to promote awareness of their unique paleontological and geological resources. The designation serves to honor the fossil's importance within the state's prehistoric context and can also enhance educational initiatives related to geology and the history of life on Earth.

In contrast, "National Fossil," "Local Fossil," and "Regional Fossil" do not typically refer to any formal designation recognized at the state or national level. The "National Fossil" would imply a designation that is not specifically connected to a state's geological identity, while "Local Fossil" and "Regional Fossil" suggest more limited geographical references that are not formally acknowledged. Therefore, the designation of "State Fossil" is distinct and recognized as a significant marker of a state’s geological patrimony.