 Oviraptor eggs, late Cretaceous, Mongolia, China |
 Precursor to the horse, Protorohippus venticolus, from the Fossil Butte Member of the Eocene, Green River Formation, WY |
 Bass, Priscacara liops, Eocene Green River Formation, Kemmerer, WY |
 Keichousauris hui, late Triassic, Guanling Fm., Xingiji, Guizhou, China |
 Herring, Knightia alta, Eocene Green River Formation, Kemmerer, WY |
 Fossil Sting Ray, Asterotrygon maloneyi, Fossil Butte Member of the Eocene Green River Formation, WY |
 Fossil fish and palm fronds, Fossil Butte Member of the Eocene Green River Formation, Fossil, WY |
 Fossilized skull of a Mosasaur, a marine reptile of the Cretaceous Period, from Morocco. |
 Trilobite: Paradoxides, Cambrian, Anti-Atlas Mountains, Morocco |
 Trilobites in a mating assemblage: Homotelis bromidensis, Ordovician Bromide Formation, Carter County, OK |
 Trilobites: Phacops rana, Devonian Silica Shale, Sylvania, OH |
 Ammonite replaced by pyrite |
 Trilobite: Elrathia kingii, Cambrian Wheeler Shale, Millard County, UT |
 Crinoid, Mississippian, Montgomery County, IN |
 Conophyton Stromatolite structures in Precambrian Helena Formation, Glacier National Park, MT |
 Ammonite, Madagascar |
 Trilobite: Asaphus cornutus, Ordovician, St. Petersburg, Russia |
 Ammonite assemblage, Lower Jurassic, North Yorkshire, U.K. |
 Trilobites: Asphus punctata, cast and mold, middle Ordovician, St. Petersburg, Russia |
 Cross section of an ammonite, Madascar |
 Dragonfly, Carduluganphus tuberculatus, Crato Fm., lower Cretaceous, Ceara, Brazil |
 Shrimp, Solenhoffen Limestone, Jurassic, Germany |
 Ammonite |
 Trilobite: Thysanopeltis speciosa, middle Devonian, Zerg, Morocco |
 Opalized Ammonite, |
 Devonian Trilobite, Phacops rana, Silica shale, Sylvania, Ohio |
 Selenopeltis, Ordovician Trilobite |
 Lycopsid tree trunk fossil in Pennsylvanian Joggins Cliffs Formation, Nova Scotia, Canada |
 Ammonitic sutures in Cretaceous fossil cephalopod, Baculites |
 Mississippi Bryozoan, Archimedes |
 Precambrian Stromatolites near Grinnell Glacier, Glacier National Park, MT |