fossiliferous

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 10
by James St. John

Gastropod internal mold (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 1
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 35
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 12
by James St. John

Geode (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 22
by James St. John

Mancos Shale over Frontier Sandstone (Upper Cretaceous; western Dinosaur National Monument, Utah, USA) 11
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 27
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 8
by James St. John

Mancos Shale badlands (Upper Cretaceous; Book Cliffs region, eastern Utah, USA) 10
by James St. John

Fossiliferous Hitz limestone
by Kyle Hartshorn

Fault in the Lowellville Shale (Pottsville Group, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 11
by James St. John

Hexagonaria (fossil coral) (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 1
by James St. John

Columbus Limestone-Delaware Limestone contact (Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 1
by James St. John

Oolitic ironstone (Brassfield Formation, Lower Silurian; Ohio Brush Creek roadcut, southern Ohio, USA) 5
by James St. John

Productid brachiopod in limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 5
by James St. John

Geodized Platystrophia ponderosa brachiopod in limestone (Corryville Member, McMillan Formation, Upper Ordovician; Flemingsburg South roadcut, Fleming County, Kentucky, USA) 5
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 41
by James St. John

Nonmarine black shale (Cow Branch Formation, Upper Triassic; Route 220 roadcut north of the Dan River, Rockingham County, North Carolina, USA) 4
by James St. John

Dolostone with small vugs (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 1
by James St. John

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

Coquina (Anastasia Formation, Quaternary; St. Augustine, Florida, USA) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 63
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 16
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 36
by James St. John

Columbus Limestone-Delaware Limestone boundary bed (Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 2
by James St. John

Pentamerid brachiopods in dolostone (Racine Formation, Middle Silurian; Grafton, Illinois, USA) 1
by James St. John

Pottsville Group over Maxville Limestone (East Fultonham Pit, Muskingum County, Ohio, USA) 7
by James St. John

Mancos Shale badlands (Upper Cretaceous; Book Cliffs region, eastern Utah, USA) 9
by James St. John

Fossiliferous volcanic tuff (Ash Hollow Formation, Miocene, 11.83 Ma; Ashfall Fossil Beds, Nebraska, USA) 6
by James St. John

Lower Mercer Limestone (Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 13
by James St. John

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

Cyclonema sp. (fossil gastropod) (Grant Lake Formation, Upper Ordovician; south of Excello, Ohio, USA) 1
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Route 16 roadcut northeast of Frazeysburg, Ohio, USA) 1
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 24
by James St. John

Chonetid brachiopods in fossiliferous limestone (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA)
by James St. John

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

Ostracods in nonmarine black shale (Cow Branch Formation, Upper Triassic; Route 220 roadcut north of the Dan River, Rockingham County, North Carolina, USA) 5
by James St. John

Fossiliferous sandstone (Allensville Member, Logan Formation, Lower Mississippian; Sugar Loaf Hill, Granville, Ohio, USA) 1
by James St. John

Lower Mercer Limestone over Middle Mercer Coal (Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 6
by James St. John

Limestone & shale (Bellevue Limestone over Fairview Formation, Upper Ordovician; Maysville West roadcut, Kentucky, USA) 3
by James St. John

Horizontal burrows in mudshale (Lowellville Shale, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 3
by James St. John

upper Boggs Member (Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 18
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 28
by James St. John

Geodized auloporid coral mass (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2
by James St. John

upper Boggs Member (Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 8
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 2
by James St. John

Chert nodule (Delaware Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 8
by James St. John

Mancos Shale badlands (Upper Cretaceous; Dinosaur National Monument, Utah, USA) 8
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 25
by James St. John

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 14
by James St. John

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

Delaware Limestone over Columbus Limestone (Middle Devonian; Indian Village Canyon, Columbus, Ohio, USA) 1
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 23
by James St. John

Fault in the Lowellville Shale (Pottsville Group, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 8
by James St. John

Solitary rugose corals (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 5
by James St. John

Orthid brachiopod in limestone (Ashlock Formation, Upper Ordovician; Route 52 roadcut, near Point Leavell, Kentucky, USA) 1
by James St. John

Bivalves in fossiliferous sandstone (Marshall Sandstone, Lower Mississippian; near Jackson, Michigan, USA) 5
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 10
by James St. John

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 13
by James St. John

Fossiliferous dolostone (Rockford Limestone, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 6
by James St. John