fossiliferous

Polished "Nellie Blue Flint" arrowhead (Upper Mercer Flint, Middle Pennsylvanian; Coshocton County, Ohio,, USA) 3
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 38
by James St. John

Coiled cephalopod in concretion (Phosphoria Formation, Permian; Idaho, USA) 3
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 57
by James St. John

International Subcommission on Cambrian Stratigraphy group photo (House Range, Utah, USA)
by James St. John

Bioturbated limestone (Silica Formation, Middle Devonian; Benchmark Materials-France Stone Company Sylvania Quarry, Lucas County, Ohio, USA)
by James St. John

Encrinite (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 1
by James St. John

Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 21
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 11
by James St. John

Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 4
by James St. John

Fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Dutch School Road outcrop, Muskingum Highlands, Ohio, USA) 9
by James St. John

Subtle folds (Lowellville Limestone-Lowellville Shale, Pottsville Group, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA)
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 39
by James St. John

Archaeocyathan limestone (Fork Tree Limestone, Lower Cambrian; Old Sellicks Hill Road, Fleurieu Peninsula, South Australia) 2
by James St. John

Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 2
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 56
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 15
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 46
by James St. John

Silicified rugose corals in fossiliferous limestone (Rico Formation, Upper Pennsylvanian; Grand County, Utah, USA) 2
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 27
by James St. John

Mastigograptus pepper rock (Fairview Formation, Upper Ordovician; Reidlin Road outcrop, Kenton County, Kentucky, USA) 2
by James St. John

Mastigograptus pepper rock (Fairview Formation, Upper Ordovician; Reidlin Road outcrop, Kenton County, Kentucky, USA) 4
by James St. John

Dixon Cave (Mammoth Cave National Park, Kentucky, USA) 1
by James St. John

Fluvial gravel bar (Salt Creek, Haynes, Hocking County, Ohio, USA) 6
by James St. John

Fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Dutch School Road outcrop, Muskingum Highlands, Ohio, USA) 10
by James St. John

Delaware Limestone over Columbus Limestone (Middle Devonian; Indian Village Canyon, Columbus, Ohio, USA) 5
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 10
by James St. John

Mastigograptus pepper rock (Fairview Formation, Upper Ordovician; Reidlin Road outcrop, Kenton County, Kentucky, USA) 1
by James St. John

Ferruginous fossiliferous flint (Boggs Member, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 38
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 11
by James St. John

Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 27
by James St. John

Gastropod internal mold (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 7
by James St. John

Pycnocrinus dyeri (fossil crinoids) (Arnheim Formation, Upper Ordovician; Dent, Ohio, USA) 12
by James St. John

Chertified encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 5
by James St. John

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 12
by James St. John

Fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Dutch School Road outcrop, Muskingum Highlands, Ohio, USA) 8
by James St. John

Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 3
by James St. John

Calcite filling a former vug in limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA)
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 17
by James St. John

Corals in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 1
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 23
by James St. John

Anthracopupa ohioensis (fossil land snails) in fossiliferous nonmarine limestone (Monongahela Group, Upper Pennsylvanian; Narrows Run North roadcut, Belmont County, eastern Ohio, USA) 3
by James St. John

Ferruginous limestone (Boggs Member, Middle Pennsylvanian; Frazeysburg Pit, Muskingum County, Ohio, USA) 12
by James St. John

Mammut americanum (American mastodon) (Pleistocene; Ziegler Reservoir, Snowmass Village, Colorado, USA) 19
by James St. John

Coquina (Puerto Penasca, Mexico)
by James St. John

Brachiopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 1
by James St. John

Teleoceras major (fossil barrel-bodied rhinos) in volcanic tuff (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 31
by James St. John

Crinoids, brachiopods, bryozoans in fossiliferous limestone
by James St. John

Flint-knapped arrowhead (Upper Mercer Flint, Middle Pennsylvanian; Nellie-Warsaw area, Ohio, USA) 1
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 17
by James St. John

"Solenopora" jurassica (fossil red algae) in limestone (White Limestone Formation, Middle Jurassic, 165-168 Ma; Foss Cross Quarry, Gloucestershire, England) 3
by James St. John

Silicified rugose coral (Columbus Limestone, Middle Devonian; Mt. Tabor, Ohio, USA)
by James St. John

Fossiliferous limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 17
by James St. John

Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 2
by James St. John

Mancos Shale badlands (Upper Cretaceous; Dinosaur National Monument, Utah, USA) 3
by James St. John

Partially silicified Hexagonaria (fossil coral) (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 5
by James St. John

Maxville Limestone (Mississippian; Jonathan Run, north-northwest of Fultonham, Ohio, USA) 32
by James St. John

Fossiliferous mudshale (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, Cumberland County, Kentucky, USA)
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 35
by James St. John