fossiliferous

"Turritella Agate" (fossiliferous chertified limestone) (Laney Member, Green River Formation, Middle Eocene; near Wamsutter, Wyoming, USA) 6
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 204
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) 20
by James St. John

Agnostus pisiformis fossil trilobites (Alum Shale Formation, upper Middle Cambrian; Andrarum, Scania, Sweden) 5
by James St. John

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

Annularia stellata (fossil horsetail) (Mazon Creek Lagerstätte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, Illinois, USA)
by James St. John

Dolostone (Silurian; midwestern USA)
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 1
by James St. John

Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 4
by James St. John

Fossiliferous flint (Upper Mercer Flint, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 3
by James St. John

Homotelus bromidensis fossil trilobites (Bromide Formation, Middle Ordovician; Criner Hills, southeastern Carter County, southern Oklahoma, USA) 2
by James St. John

Encrinite (crinoidal limestone) (Ft. Payne Limestone, Lower Mississippian; Lake Cumberland, Kentucky, USA) 24
by James St. John

Fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 6
by James St. John

Hormotoma internal mold in limestone (Galena Formation, Ordovician; eastern Iowa, USA)
by James St. John

Fossiliferous limestone with phylloidal algae (Putnam Hill Limestone, Middle Pennsylvanian; waste rock pile from old clay mine along Blunt Run, Muskingum Township, Muskingum County, Ohio, USA) 7
by James St. John

"Turritella Agate" (fossiliferous chertified limestone) (Laney Member, Green River Formation, Middle Eocene; near Wamsutter, Wyoming, USA) 7
by James St. John

Dichocrinus ficus (fossil crinoid) (Edwardsville Formation, Lower Mississippian; near Crawfordsville, Indiana, USA) 3
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 195
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 205
by James St. John

Hexagonaria percarinata (fossil coral) (Petoskey Stone) (Traverse Group, Middle Devonian; Michigan, USA) 9
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 190
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 194
by James St. John

Coquina (Anastasia Formation, Quaternary; St. Augustine, Florida, USA) 3
by James St. John

Leptaena fossil brachiopod in fossiliferous limestone (Middle Devonian; gravel bar clast, Olentangy River, Columbus, Ohio, USA) 1
by James St. John

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

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 198
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 201
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 200
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) 17
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 20
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 68
by James St. John

Fossiliferous limestone (Gravel Point Formation, Middle Devonian; near South Point, west of Charlevoix, Michigan, USA) 3
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 197
by James St. John

Fossiliferous chert nodule in fossiliferous limestone (Boggs Limestone, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 6
by James St. John

Crinoid stem in fossiliferous limestone (Lower Mercer Limestone, Pottsville Group, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 3
by James St. John

Yabeina globosa fusulinid foraminifera (Akasaka Limestone, Upper Permian; Kinshozan, Gifu, Honshu, Japan) 1
by James St. John

Fossiliferous limestone with phylloidal algae (Putnam Hill Limestone, Middle Pennsylvanian; waste rock pile from old clay mine along Blunt Run, Muskingum Township, Muskingum County, Ohio, USA) 8
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 203
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 189
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Taylor & Bell Quarry, near Marble Cliff, Ohio, USA) 11
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 95
by James St. John

Tentaculites gyracanthus in fossiliferous limestone (Manlius Limestone, Lower Devonian; near Ravena, New York State, USA) 2
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 202
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 161
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 171
by James St. John

Fusulinid limestone (Cambridge Limestone, Upper Pennylvanian; ravine north of Helmick Bridge, Morgan County, Ohio, USA) 1
by James St. John

Zaphrentis phrygia fossil rugose coral (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 3
by James St. John

Crinoid stem in fossiliferous limestone (Lower Mercer Limestone, Pottsville Group, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 1
by James St. John

Fossiliferous limestone (Fulton Shale, Upper Ordovician; Woolcott South roadcut, Kentucky, USA) 1
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 170
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 185
by James St. John

Crinoid stems (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, 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) 04
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 165
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 56
by James St. John

Gastropod internal mold (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 6
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 41
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 158
by James St. John

Glacial grooves from Pleistocene glaciation on Columbus Limestone (Middle Devonian) (Glacial Grooves State Park, Kelleys Island, Ohio, Lake Erie, USA) 3
by James St. John

Fossiliferous peloidal phosphorite (Zhongyicun Member, Zhujiaqing Formation, Lower Cambrian; Meishucun, Yunnan, China) 1
by James St. John