fossiliferous

Wavy-bedded fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Rt. 541 roadcut, west of Tunnel Hill, Coshocton County, Ohio, USA) 7
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 24
by James St. John

Pentamerid brachiopods in dolostone (Racine Formation, Middle Silurian; Grafton, Illinois, USA) 2
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 13
by James St. John

Fossiliferous limestone (Delaware Limestone, Middle Devonian; Olentangy River at Lazarus Run confluence, Delaware County, Ohio, USA) 11
by James St. John

Crinoidal limestone (Kope Formation, Upper Ordovician; Cincinnati area, USA) 2
by James St. John

Fossiliferous sandstone (Logan Formation, Lower Mississippian; Walhonding Road Outcrop, Knox County, Ohio, USA) 8
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) 1
by James St. John

Chertified fossiliferous oolitic limestone boulder in conglomerate ("Sharon Conglomerate", Lower Pennsylvanian; Jackson North roadcut, Ohio, USA) 3
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) 4
by James St. John

Cyrtospirifer disjunctus (fossil brachiopod) (Chemung Group, Devonian; southwestern New York State, USA) 1
by James St. John

Solitary rugose corals (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 17
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) 3
by James St. John

Silicified rugose corals in fossiliferous limestone (Rico Formation, Upper Pennsylvanian; Grand County, Utah, USA) 1
by James St. John

Frost-highlighted fossiliferous limestone (Waynesville Formation, Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, USA) 7
by James St. John

Stereospyroceras sp. (fossil cephalopod) in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, USA) 3
by James St. John

Fossiliferous shale (Lower Mercer Shale, Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 2
by James St. John

Crinoid-rich shales (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 1
by James St. John

Gastropod fossil with encrusting stromatoporoid (Columbus Limestone, Middle Devonian; Columbus, Ohio, USA)
by James St. John

Fenestrate bryozoan in shale (Lower Mercer Shale, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA)
by James St. John

Brachiopods in limestone (Richmondian Stage, Upper Ordovician; Southgate Hill roadcut, Indiana, USA) 3
by James St. John

Fossiliferous limestone (Delaware Limestone, Middle Devonian; Olentangy River at Lazarus Run confluence, Delaware County, Ohio, USA) 10
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Mohawk Dam emergency spillway, western Coshocton County, Ohio, USA) 10
by James St. John

Ferruginous limestone (Boggs Member, Middle Pennsylvanian; Frazeysburg Pit, Muskingum County, Ohio, USA) 19
by James St. John

Sparry fossiliferous limestone (Corryville Member, McMillan Formation, Upper Ordovician; Flemingsburg South roadcut, Fleming County, Kentucky, USA) 2
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 48
by James St. John

Boggs Member (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 1
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 14
by James St. John

Interbedded limestones and shales (Cincinnatian Series, Upper Ordovician; highwall along Flat Fork, Warren County, Ohio, USA) 6
by James St. John

Wavy-bedded fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Rt. 541 roadcut, west of Tunnel Hill, Coshocton County, Ohio, USA) 8
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 21
by James St. John

Hexagonaria percarinata (fossil rugose coral) (Traverse Group, Middle Devonian; Michigan, USA) 5
by James St. John

Brachiopods in limestone (Richmondian Stage, Upper Ordovician; Southgate Hill roadcut, Indiana, USA) 1
by James St. John

Unidentified fossil (Boggs Limestone) 2
by James St. John

Fossil scallop in ironstone concretion (Nancy Member, Borden Formation, Lower Mississippian; Lewis County, Kentucky, USA) 2
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 44
by James St. John

Fossiliferous limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 10
by James St. John

Coiled cephalopod (Lowellville Shale, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 3
by James St. John

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

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 50
by James St. John

Corals in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 13
by James St. John

Fossil mound in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, USA) 1
by James St. John

Fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 3
by James St. John

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

Horseshoe Falls (19 November 2017) (Flat Fork, Warren County, Ohio, USA) 12
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 26
by James St. John

Tentaculites gyracanthus in fossiliferous limestone (Manlius Limestone, Lower Devonian; near Ravena, New York State, USA) 1
by James St. John

Mancos Shale badlands (Upper Cretaceous; near the town of Grand Junction, Colorado, USA) 9
by James St. John

Plant fossils in claystone (Pekin Formation, Upper Triassic; Boren Clay Pit, Gulf, North Carolina, USA) 19
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 15
by James St. John

Lower Mercer Limestone (Middle Pennsylvanian) (Symmes Creek, Mollies Rock Road bridge, Muskingum County, Ohio, USA) 9
by James St. John

Conchostracans in nonmarine black shale (Cow Branch Formation, Upper Triassic; Route 220 roadcut north of the Dan River, Rockingham County, North Carolina, USA) 1
by James St. John

Fish spine in nonmarine black shale (Cow Branch Formation, Upper Triassic; Route 220 roadcut north of the Dan River, Rockingham County, North Carolina, USA) 2
by James St. John

Mammut americanum (American mastodon) (Pleistocene; Ziegler Reservoir, Snowmass Village, Colorado, USA) 24
by James St. John

Anthracospirifer occiduus 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

Mancos Shale badlands (Upper Cretaceous; northern side of Grand Valley, western Colorado, USA) 4
by James St. John

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 102
by James St. John

Intraclastic limestone (Columbus Limestone, Middle Devonian) 1
by James St. John

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

Fossil rugose coral (Columbus Limestone, Middle Devonian; Ohio, USA) 1
by James St. John