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Doug Sherman | profile | all galleries >> Geology >> Fossils tree view | thumbnails | slideshow

Fossils

Fossils are any preserved sign of former life exclusive of historic times. This may include organisms that have been preserved close to their former state, organisms which have been replced by new mineral materials, or any evidence that the organism existed such as a footprint, trail, or scat.
Oviraptor eggs, late Cretaceous, Mongolia, China
Oviraptor eggs, late Cretaceous, Mongolia, China
Precursor to the horse, Protorohippus venticolus, from the Fossil Butte Member of the Eocene, Green River Formation,  WY
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
Bass, Priscacara liops, Eocene Green River Formation, Kemmerer, WY
Keichousauris hui, late Triassic, Guanling Fm., Xingiji, Guizhou, China
Keichousauris hui, late Triassic, Guanling Fm., Xingiji, Guizhou, China
Herring, Knightia alta, Eocene Green River Formation, Kemmerer, WY
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 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
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.
Fossilized skull of a Mosasaur, a marine reptile of the Cretaceous Period, from Morocco.
Trilobite: Paradoxides, Cambrian, Anti-Atlas Mountains, Morocco
Trilobite: Paradoxides, Cambrian, Anti-Atlas Mountains, Morocco
Trilobites in a mating assemblage:  Homotelis bromidensis, Ordovician Bromide Formation, Carter County, OK
Trilobites in a mating assemblage: Homotelis bromidensis, Ordovician Bromide Formation, Carter County, OK
Trilobites: Phacops rana, Devonian Silica Shale, Sylvania, OH
Trilobites: Phacops rana, Devonian Silica Shale, Sylvania, OH
Ammonite replaced by pyrite
Ammonite replaced by pyrite
Trilobite: Elrathia kingii, Cambrian Wheeler Shale, Millard County, UT
Trilobite: Elrathia kingii, Cambrian Wheeler Shale, Millard County, UT
Crinoid, Mississippian, Montgomery County, IN
Crinoid, Mississippian, Montgomery County, IN
Conophyton Stromatolite structures in Precambrian Helena Formation, Glacier National Park, MT
Conophyton Stromatolite structures in Precambrian Helena Formation, Glacier National Park, MT
Ammonite, Madagascar
Ammonite, Madagascar
Trilobite: Asaphus cornutus, Ordovician, St. Petersburg, Russia
Trilobite: Asaphus cornutus, Ordovician, St. Petersburg, Russia
Ammonite assemblage,  Lower Jurassic, North Yorkshire, U.K.
Ammonite assemblage, Lower Jurassic, North Yorkshire, U.K.
Trilobites: Asphus punctata, cast and mold, middle Ordovician, St. Petersburg, Russia
Trilobites: Asphus punctata, cast and mold, middle Ordovician, St. Petersburg, Russia
Cross section of an ammonite, Madascar
Cross section of an ammonite, Madascar
Dragonfly,  Carduluganphus tuberculatus, Crato Fm., lower Cretaceous, Ceara, Brazil
Dragonfly, Carduluganphus tuberculatus, Crato Fm., lower Cretaceous, Ceara, Brazil
Shrimp, Solenhoffen Limestone, Jurassic, Germany
Shrimp, Solenhoffen Limestone, Jurassic, Germany
Ammonite
Ammonite
Trilobite: Thysanopeltis speciosa, middle Devonian, Zerg, Morocco
Trilobite: Thysanopeltis speciosa, middle Devonian, Zerg, Morocco
Opalized Ammonite,
Opalized Ammonite,
Devonian Trilobite, Phacops rana, Silica shale, Sylvania, Ohio
Devonian Trilobite, Phacops rana, Silica shale, Sylvania, Ohio
Selenopeltis, Ordovician Trilobite
Selenopeltis, Ordovician Trilobite