fossiliferous

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) 34
by James St. John

Fossil mound in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, USA) 2
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 70
by James St. John

Mammut americanum (American mastodon) (Pleistocene; Ziegler Reservoir, Snowmass Village, Colorado, USA) 31
by James St. John

Fossiliferous limestone with chert nodules (lower Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 11
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 34
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 25
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) 06
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 60
by James St. John

Fossiliferous bituminous coal (Clarion Coal, Middle Pennsylvanian; Prattsville West Roadcut, Vinton County, Ohio, USA) 8
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 71
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 37
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 1
by James St. John

Fossiliferous flint masses in limestone (Upper Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 4
by James St. John

Fossiliferous limestone (Poverty Run Limestone, Lower Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 8
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 11
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 32
by James St. John

Chertified encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 8
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 48
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 32
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 15
by James St. John

Grypania spiralis (Negaunee Iron-Formation, Paleoproterozoic, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 48
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) 5
by James St. John

Pottsville Group over Maxville Limestone (Black 17 Mine, White Cottage, Ohio, USA) 24
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 28
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) 35
by James St. John

Fossiliferous bituminous coal (Clarion Coal, Middle Pennsylvanian; Prattsville West Roadcut, Vinton County, Ohio, USA) 4
by James St. John

Mammut americanum (American mastodon) (Pleistocene; Ziegler Reservoir, Snowmass Village, Colorado, USA) 29
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 10
by James St. John

Vuggy, sucrosic dolostone (Lockport Dolostone, Middle Silurian; National Lime & Stone Company Buckland Quarry, Auglaize County, Ohio, USA) 2
by James St. John

Fossiliferous bituminous coal (Clarion Coal, Middle Pennsylvanian; Prattsville West Roadcut, Vinton County, Ohio, USA) 11
by James St. John

Ferruginous fossiliferous flint (Boggs Member, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 4
by James St. John

Leptaena fossil brachiopods in fossiliferous limestone (Middle Devonian; Olentangy River bank near Lazarus Run, Delaware County, Ohio, USA) 4
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 75
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 69
by James St. John

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

Platystrophia ponderosa brachiopods (Corryville Member, McMillan Formation, Upper Ordovician; Flemingsburg South roadcut, Fleming County, Kentucky, USA) 4
by James St. John

Plant fossil in claystone (Pekin Formation, Upper Triassic; Boren Clay Pit, Gulf, North Carolina, USA) 10
by James St. John

Wavy-bedded fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Rt. 541 roadcut, west of Tunnel Hill, Coshocton County, Ohio, USA) 1
by James St. John

Fossiliferous limestone (Boggs Limestone, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 4
by James St. John

Agnostus pisiformis fossil trilobites (Alum Shale Formation, upper Middle Cambrian; Vastergotland, Sweden) 1
by James St. John

Fossiliferous ocherous dolomitic siltstone (Henley Member, Borden Formation, Lower Mississippian; Tener Mountain roadcut, southern Ohio, USA) 1
by James St. John

Encrinite (crinoidal limestone) (Ft. Payne Limestone, Lower Mississippian; Lake Cumberland, Kentucky, USA) 7
by James St. John

Fossiliferous limestones (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 51
by James St. John

Historic Entrance (Mammoth Cave, Kentucky, USA) 30
by James St. John

Vertebrate tooth 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

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 53
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 45
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 31
by James St. John

Fossiliferous cannel coal (Upper Freeport Coal, Middle Pennsylvanian; Diamond Coal Mine, Linton, Ohio, USA) 5
by James St. John

Acanthotelson stimpsoni (fossil shrimp) (Mazon Creek Lagerstätte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, northern Illinois, USA)
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) 40
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 21
by James St. John

Trace fossils in limestone (Waynesville Formation, Upper Ordovician; Roaring Run, Warren County, Ohio, USA) 4
by James St. John

Conus spuroides fossil cone snail shells (Caloosahatchee Formation, Upper Pliocene-Lower Pleistocene; gravel pit in southwestern Florida, USA) 1
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 19
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; outcrop near Nellie, Coshocton County, Ohio, USA) 12
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 83
by James St. John

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 17
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 76
by James St. John