Fossils are the preserved remains of deceased animals in rock. Those found throughout Wisconsin formed from creatures that lived in the warm, shallow seas that once covered the state.
The content of these webpages was adapted from Common Paleozoic Fossils of Wisconsin by Ross H. Nehm and Bryan E. Bemis (2002). Photos were generously provided by the Milwaukee Public Museum unless otherwise noted.
Learn more about how Wisconsin’s fossils formed!
Trilobites
Stromatolites
Corals
Brachiopods
Bivalve Mollusks
Gastropod Mollusks
Cephalopod Mollusks
