Paleozoic reptile or amphibian skull fossils by Elizabeth Fagan, Lake Michigans Left Coast

Paleozoic Reptile or Amphibian Fossils

The Paleontology Portal (paleoportal.org) tells us this: The youngest Paleozoic rocks in Wisconsin are the Devonian limestones and shales found north of Milwaukee. These rocks indicate the presence of a retreating shallow sea. North America was positioned over the equator during this time, and what is now Wisconsin was located in the tropics. The most … Continue reading Paleozoic Reptile or Amphibian Fossils