fossiliferous

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) 18
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 9
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 14
by James St. John

Fossil fish bones in limestone (basal Delaware Limestone, Middle Devonian; eastern bank of the Scioto River, Columbus, Ohio, USA) 1
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 22
by James St. John

Interbedded fossiliferous limestones and shales (Cincinnatian Series, Upper Ordovician; highwall along Flat Fork, Warren County, Ohio, USA) 7
by James St. John

Lower Mercer Limestone (Middle Pennsylvanian) (Symmes Creek, Mollies Rock Road bridge, Muskingum County, Ohio, USA) 3
by James St. John

Stereospyroceras sp. (fossil cephalopod) in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, USA) 6
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 19
by James St. John

Teleoceras major (barrel-bodied rhino) (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 6
by James St. John

Joint in limestone (Columbus Limestone, Middle Devonian; Indian Village Canyon, Columbus, Ohio, USA) 2
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 36
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 42
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 29
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 26
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 3
by James St. John

Dixon Cave (Mammoth Cave National Park, Kentucky, USA) 10
by James St. John

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 103
by James St. John

Dixon Cave (Mammoth Cave National Park, Kentucky, USA) 7
by James St. John

Fossiliferous bituminous coal (Clarion Coal, Middle Pennsylvanian; Prattsville West Roadcut, Vinton County, Ohio, USA) 3
by James St. John

Fisherites reticulatus fossil algae (Kimmswick Formation, Upper Ordovician; riverbed near Ste. Genevieve, Missouri, USA) 3
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) 25
by James St. John

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 20
by James St. John

Large favositid coral colony in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 5
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 13
by James St. John

Glauconitic fossiliferous limestone (Nada Member, Borden Formation, Lower Mississippian; Interstate-64 roadcut north-northeast of Morehead, Kentucky, USA) 2
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 25
by James St. John

Bivalve in concretion (Mazon Creek Lagerstätte, Middle Pennsylvanian; Mazon Creek area, Illinois, USA)
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 21
by James St. John

Vanport Limestone (Middle Pennsylvanian; Bear Hollow Road roadcut, central Flint Ridge, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 13
by James St. John

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

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 27
by James St. John

Fossiliferous volcanic tuff (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 3
by James St. John

Fossil plants in carbonaceous shale (top of Pottsville Formation, Middle Pennsylvanian; old coal mine ENE of St. Clair, Pennsylvania, USA) 14
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 41
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 23
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 10
by James St. John

Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 1
by James St. John

Lapis lazuli (Rio Tascadero Limestone, Lower Cretaceous; Flor de los Andes Mine, Andes Mountains, Chile)
by James St. John

Anthracospirifer fossil brachiopod in fossiliferous limestone (Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 3
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 17
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 20
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 8
by James St. John

Fossiliferous limestone (Leitchfield Formation, Upper Mississippian; Western Kentucky Parkway roadcut, southern side of Leitchfield, Kentucky, USA) 6
by James St. John

Trilobite packstone (Alum Shale Formation, Upper Cambrian; Kinnekulle Outlier, Västergötland, Sweden) 16
by James St. John

Fossil rugose coral (Columbus Limestone, Middle Devonian; Ohio, USA) 3
by James St. John

"Turritella Agate" (fossiliferous chert) (Laney Member, Green River Formation, Middle Eocene; near Wamsutter, Wyoming, USA) 1
by James St. John

White fossiliferous chert nodule in fossiliferous limestone (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 6
by James St. John

Fossiliferous phosphorite (Fish Scale Marker Bed, Meade Peak Member, Phosphoria Formation, Permian; Idaho, USA) 2
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 22
by James St. John

Trilobite packstone (Alum Shale Formation, Upper Cambrian; Kinnekulle Outlier, Västergötland, Sweden) 17
by James St. John

Teleoceras major (fossil barrel-bodied rhino) in fossiliferous volcanic tuff (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 14
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 29
by James St. John

Crinoid stems (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 17
by James St. John

East River Valley & Gothic Mountain (Gunnison County, Colorado, USA) 6
by James St. John

Limestones (Chepultepec Formation, Lower Ordovician; Natural Bridge State Park, Virginia, USA) 3
by James St. John

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 25
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 73
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 34
by James St. John