20Fossil sites
Windfall Formation
Windfall Formation in the United States: 20 fossil sites. Typical age: 497–494 million years (Cambrian, Ordovician).
20Fossil sites
87Finds
497–494 million yearsTypical age
CambrianMain period
Where its fossils were found
OrdovicianCambrian
By geological period
Ordovician1
Cambrian19
What was found
Trilobites · 87Irvingella, Anechocephalus, Bienvillia, Elvinia, Pterocephalia, Eurekia, Iddingsia, Xenocheilos, Stenambon, Sigmocheilus, Kindbladia, Olenus, Bowmania, Euptychaspis, Idiomesus, Triarthropsis
Towns with the most fossil sites nearby
Other formations of the same period
Cambrian
Deadwood Formation 192Pioche Shale 187Riley Formation 184Wilberns Formation 135Carrara Formation 121Orr Formation 102Emigrant Formation 97Campito Formation 91Poleta Formation 82Signal Mountain Limestone 73Gatesburg Formation 72Davis Formation 49Warrior Formation 40House Limestone 37Franconia Formation 34Honey Creek Limestone 31Fort Sill Limestone 30Eminence Formation 28Marjum Formation 27Dunderberg Shale 26Harkless Formation 26Nopah Formation 26Wheeler Formation 26Wheeler Shale 24