fossiliferous

Encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 4
by James St. John

Natural Bridge of Virginia (Natural Bridge State Park, Virginia, USA) 1
by James St. John

Fossiliferous fluvial deposit (Long Pine Formation, Pliocene, 2-3 Ma; Zebra Quarry, Ashfall Fossil Beds, Nebraska, USA) 2
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 33
by James St. John

Ferruginous, pyritic-glauconitic dolostone (uppermost Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 2
by James St. John

Trilobite packstone (Alum Shale Formation, Upper Cambrian; Kinnekulle Outlier, Västergötland, Sweden) 1
by James St. John

Fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Dutch School Road outcrop, Muskingum Highlands, Ohio, USA) 7
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 45
by James St. John

Biohermal mound & draping beds (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 4
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Route 16 roadcut northeast of Frazeysburg, Ohio, USA) 3
by James St. John

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

Diplocraterion trace fossil (Arnheim Formation, Upper Ordovician; Hamilton County, southwestern Ohio, USA)
by James St. John

Coquina (Anastasia Formation, Quaternary; St. Augustine, Florida, USA) 2
by James St. John

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

Grewingkia canadensis (fossil rugose corals) (Upper Ordovician; Cincinnati area, Ohio, USA) 3
by James St. John

Grewingkia canadensis (fossil rugose coral encrusted with bryozoans) (Whitewater Formation, Upper Ordovician; Richmond South roadcut, Wayne County, Indiana, USA) 3
by James St. John

Boggs Limestone (Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 9
by James St. John

Fossiliferous shale (Lower Mercer Shale, Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 17
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 49
by James St. John

Encrinite (Glen Dean Formation, Upper Mississippian; Rt. 62 roadcut, next to Rt. 3155 intersection, Leitchfield, Kentucky, USA) 1
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 14
by James St. John

Boggs Limestone (Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 72
by James St. John

Horizontal burrows in mudshale (Lowellville Shale, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 2
by James St. John

Black chert nodule (Delaware Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 5
by James St. John

Lower Mercer Limestone (Middle Pennsylvanian) (Symmes Creek, Mollies Rock Road bridge, Muskingum County, Ohio, USA) 5
by James St. John

Coshocton Flint (Upper Mercer Flint, Middle Pennsylvanian; Ohio, USA) 18
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 19
by James St. John

Boggs Limestone (Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 11
by James St. John

Upper Mercer Limestone-Upper Mercer Flint (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 4
by James St. John

Rugose coral in fossiliferous limestone (Columbus Limestone, Middle Devonian; Olentangy Indian Caverns, central Ohio, USA) 2
by James St. John

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 11
by James St. John

Gastropod internal mold (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 4
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 46
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 17
by James St. John

Mammut americanum (American mastodon) (Pleistocene; Ziegler Reservoir, Snowmass Village, Colorado, USA) 28
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 60
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 35
by James St. John

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

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 40
by James St. John

Normal fault in the Lowellville Shale (Pottsville Group, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 5
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 4
by James St. John

Plant fossils in claystone (Pekin Formation, Upper Triassic; Boren Clay Pit, Gulf, North Carolina, USA) 21
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 3
by James St. John

Interbedded fossiliferous limestones and shales (Fairview Formation-Bellevue Limestone, Upper Ordovician; upper cut, Maysville West roadcut, Kentucky, USA) 1
by James St. John

Pottsville Group over Maxville Limestone (East Fultonham Pit, Muskingum County, Ohio, USA) 8
by James St. John

Pseudorthoceras sp. (fossil cephalopod) (Lower Mercer Limestone, Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 1
by James St. John

Fossiliferous ferruginous sandstone (Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 5
by James St. John

Hexagonaria percarinata (fossil coral) (Petoskey Stone) (Traverse Group, Middle Devonian; Michigan, USA) 7
by James St. John

Natural Bridge of Virginia with Ordovician dolostones over limestones (Natural Bridge State Park, Virginia, USA) 2
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 8
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 36
by James St. John

Trigonostoma tenera fossil snail shell (Caloosahatchee Formation, Upper Pliocene-Lower Pleistocene; gravel pit in southwestern Florida, USA) 2
by James St. John

Pottsville Group over Maxville Limestone (East Fultonham Pit, Muskingum County, Ohio, USA) 10
by James St. John

Coiled cephalopod (Lowellville Shale, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 6
by James St. John

Charcoal debris horizon in bituminous coal (Lower Mercer Coal, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 4
by James St. John

Rafinesquina ponderosa (fossil brachiopod) (Grant Lake Formation, Upper Ordovician; south of Excello, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 42
by James St. John

Putnam Hill Limestone (Middle Pennsylvanian; Dutch School Road outcrop, Muskingum Highlands, Ohio, USA) 2
by James St. John