fossiliferous

Historic Entrance (Mammoth Cave, Kentucky, USA) 6
by James St. John

Horseshoe Falls (19 November 2017) (Flat Fork, Warren County, Ohio, USA) 13
by James St. John

Trilobite packstone (Alum Shale Formation, Upper Cambrian; Kinnekulle Outlier, Västergötland, Sweden) 4
by James St. John

Upper Mercer Limestone over Bedford Coal (Middle Pennsylvanian; Noland Tunnel's north portal outcrop, Tunnel Hill, Coshocton County, Ohio, USA) 13
by James St. John

Acanthopecten carboniferous (fossil scallop shell) (Lower Mercer Shale, Pottsville Group, Middle Pennsylvanian; Berry Run, Flint Ridge, Ohio, USA)
by James St. John

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

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 16
by James St. John

Sparry fossiliferous limestone (Corryville Member, McMillan Formation, Upper Ordovician; Flemingsburg South roadcut, Fleming County, Kentucky, USA) 3
by James St. John

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

Fossiliferous limestone (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 5
by James St. John

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

Fluvial gravel bar (Salt Creek, Haynes, Hocking County, Ohio, USA) 3
by James St. John

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

Favistina stellata (fossil coral) (Upper Ordovician; Pewee Valley, 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) 20
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) 24
by James St. John

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

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 4
by James St. John

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 8
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 22
by James St. John

Teleoceras major (barrel-bodied rhino) (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 4
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 14
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 50
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 12
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Taylor & Bell Quarry, near Marble Cliff, Ohio, USA) 19
by James St. John

Fossiliferous limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 16
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 84
by James St. John

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

Fossiliferous limestone (Leitchfield Formation, Upper Mississippian; Western Kentucky Parkway roadcut, southern side of Leitchfield, Kentucky, USA) 1
by James St. John

Trichophycus venosum (trace fossil) in limestone (Waynesville Formation, Upper Ordovician; Roaring Run, Warren County, Ohio, USA)
by James St. John

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

Historic Entrance (Mammoth Cave, Kentucky, USA) 48
by James St. John

Productid brachiopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 7
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 20
by James St. John

Encrinite (crinoidal limestone) (Ft. Payne Limestone, Lower Mississippian; Lake Cumberland, Kentucky, USA) 21
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 22
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Taylor & Bell Quarry, near Marble Cliff, Ohio, USA) 8
by James St. John

Productid brachiopod in flint-bearing fossiliferous limestone (Upper Mercer Limestone, Middle Pennsylvanian; Nellie, Ohio, USA) 2
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 5
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 9
by James St. John

Brachiopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 2
by James St. John

Ferruginous limestone (Boggs Member, Middle Pennsylvanian; Frazeysburg Pit, Muskingum County, Ohio, USA) 9
by James St. John

Upper Mercer Limestone over Bedford Coal (Middle Pennsylvanian; Noland Tunnel's north portal outcrop, Tunnel Hill, Coshocton County, Ohio, USA) 3
by James St. John

Fisherites reticulatus fossil algae (Kimmswick Formation, Upper Ordovician; riverbed near Ste. Genevieve, Missouri, USA) 4
by James St. John

Fossiliferous bituminous coal (Clarion Coal, Middle Pennsylvanian; Prattsville West Roadcut, Vinton County, Ohio, USA) 1
by James St. John

Oolitic ironstone (Brassfield Formation, Lower Silurian; Ohio Brush Creek roadcut, southern Ohio, USA) 6
by James St. John

Fossiliferous limestone (Leitchfield Formation, Upper Mississippian; Western Kentucky Parkway roadcut, southern side of Leitchfield, Kentucky, USA) 4
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 19
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 21
by James St. John

Fossiliferous limestone (Boggs Limestone, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 9
by James St. John

Encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 18
by James St. John

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

Productid brachiopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 6
by James St. John

Large favositid coral colony in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 2
by James St. John

Large favositid coral colony in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, 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) 38
by James St. John

Columbus Limestone (Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 11
by James St. John

Bivalves in fossiliferous sandstone (Marshall Sandstone, Lower Mississippian; near Jackson, Michigan, USA) 7
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 5
by James St. John

Teleoceras major (fossil barrel-bodied rhino) in volcanic tuff (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 23
by James St. John