pennsylvanian

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 262
by James St. John

Fossiliferous flint (Upper Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 5
by James St. John

Fossiliferous asphaltic limestone (Buckhorn Asphalt, Middle Pennsylvanian; Buckhorn Asphalt Quarry, Oklahoma, USA) 1
by James St. John

Fossil tree trunk (Kanawha Formation, Middle Pennsylvanian; Interstate 64 roadcut, Kanawha County, West Virginia, USA) 2
by James St. John

Polished "Nellie Blue Flint" arrowhead (Upper Mercer Flint, Middle Pennsylvanian; Coshocton County, Ohio,, USA) 3
by James St. John

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 95
by James St. John

Essexella asherae (fossil jellyfish) (Mazon Creek Lagerstätte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, northern Illinois, USA) 1
by James St. John

Iron oxide stained & banded, cross-bedded quartzose sandstone (Hyden Formation, Middle Pennsylvanian; Jackson North roadcut, Breathitt County, Kentucky, USA) 1
by James St. John

Cannel coal (Cannel City-Amburgy Coal Zone, Middle Pennsylvanian; Jackson North Rt. 15 roadcut, Breathitt County, Kentucky, USA) 4
by James St. John

Fossiliferous limestone with phylloidal algae (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 3
by James St. John

Pottsville Group (Pennsylvanian; Dupler Pit, East Fultonham, Muskingum County, Ohio, USA) 14
by James St. John

Anthracite coal (Llewellyn Formation, Middle Pennsylvanian; Pioneer Tunnel Coal Mine, Ashland, Pennsylvania, USA)
by James St. John

Bandringa rayi (fossil shark) (Mazon Creek Lagerstätte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, northern Illinois, USA) 3
by James St. John

Petition from Pennsylvanians to Reject Slavery, 1844 (page 1 of 2)
by U.S. National Archives

Fossiliferous limestone (Boggs Limestone, middle Pottsville Group, lower Middle Pennsylvanian; outcrop spanning Blunt Run, northern Muskingum County, eastern Ohio, USA)
by James St. John

Fossil plants in carbonaceous shale (top of Pottsville Formation, Middle Pennsylvanian; old coal mine ENE of St. Clair, Pennsylvania, USA) 14
by James St. John

Zaleski Flint (Middle Pennsylvanian; west of Creola, northern Vinton County, Ohio, USA) 33
by James St. John

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 244
by James St. John

Petition from Pennsylvanians to Reject Slavery, 1844 (page 2 of 2)
by U.S. National Archives

Flint (Vanport Flint, Middle Pennsylvanian; Flint Ridge, Ohio, USA) 1
by James St. John

Lepidodendron aculeatum (fossil tree) (Pennsylvanian) 2
by James St. John

Vanport Flint (Middle Pennsylvanian; Roy Miller flint pit, Flint Ridge, Ohio, USA) 6
by James St. John

Flint (Vanport Flint, Middle Pennsylvanian; Flint Ridge, Ohio, USA) 2
by James St. John

Turgite on flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 9
by James St. John

Fossil log (Llewellyn Formation, Middle Pennsylvanian; Pioneer Tunnel Coal Mine, Ashland, Pennsylvania, USA) 1
by James St. John

Essexella asherae (fossil jellyfish) (Mazon Creek Lagerstätte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, northern Illinois, USA) 2
by James St. John

Lower Mercer Limestone (Middle Pennsylvanian) (Symmes Creek, Mollies Rock Road bridge, Muskingum County, Ohio, USA) 3
by James St. John

Upper Mercer Flint & Upper Mercer Limestone (Middle Pennsylvanian; roadcut along Mollies Rock Road, Muskingum County, Ohio, USA) 3
by James St. John

Sandstone (Sharon Formation, Lower Pennsylvanian; Virginia Kendall Ledges, Ohio, USA) 1
by James St. John

Shatterconed dolostone (Serpent Mound Impact Structure, southern Ohio, USA) 2
by James St. John

Fossiliferous asphaltic limestone (Buckhorn Asphalt, Middle Pennsylvanian; Buckhorn Asphalt Quarry, Oklahoma, USA) 2
by James St. John

Conglomerate (Sharon Formation, Lower Pennsylvanian; Virginia Kendall Ledges, Ohio, USA) 1
by James St. John

Cannel coal (Bedford Coal, Middle Pennsylvanian; Noland Tunnel's north portal outcrop, Tunnel Hill, Coshocton County, Ohio, USA) 4
by James St. John

Vanport Flint (Middle Pennsylvanian; Flint Ridge State Park, Ohio, USA) 26
by James St. John

Flint breccia-floored cavity in pinstriple flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 1
by James St. John

Trough cross-bedded quartzose sandstone (Hyden Formation, Middle Pennsylvanian; Jackson North roadcut, Breathitt County, Kentucky, USA) 2
by James St. John

Pedogenic breccia (Conemaugh Group, Upper Pennsylvanian; creek cut on the western side of Caldwell, Ohio, USA) 25
by James St. John

Working on the train
by rxb

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 161
by James St. John

Flint-knapped arrowhead (Vanport Flint, Middle Pennsylvanian; Roy Miller Flint Quarries, Flint Ridge, Ohio, USA) 3
by James St. John

Cracked highway from subsurface coal fire (Route 61, near Centralia, Pennsylvania, USA) 3
by James St. John

Cannel coal (Flint Ridge Coal, Middle Pennsylvanian; old cannel coal mine along Cooks Hill Road, Flint Ridge, Ohio, USA) 4
by James St. John

Brachiopod in fossiliferous limestone (Lowellville Limestone, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 1
by James St. John

Quartz crystal-lined vug with barite in flint meganodule (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, eastern Flint Ridge, Ohio, USA) 3
by James St. John

Neopteroplax conemaughensis (fossil amphibian) (Birmingham Shale, Upper Pennsylvanian; Bloomingdale, Ohio, USA) 1
by James St. John

Fossiliferous limestone (Poverty Run Limestone, Lower Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 3
by James St. John

Fasciculiconcha knightii (fossil bivalve) (Upper Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 9
by James St. John

Flint-knapped arrowhead (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 6
by James St. John

Pedogenic breccia (Conemaugh Group, Upper Pennsylvanian; creek cut on the western side of Caldwell, Ohio, USA) 18
by James St. John

Zaleski Flint (Middle Pennsylvanian; west of Creola, northern Vinton County, Ohio, USA) 34
by James St. John

Vanport Flint (Middle Pennsylvanian; Flint Ridge State Park, Ohio, USA) 27
by James St. John

Carbonized plant fossils in siliciclastics (above the Lower Mercer Limestone, Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 4
by James St. John

Posidonia fossil bivalve (Lowellville Shale, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 2
by James St. John

Pebbly sandstone (Lee Formation, Pennsylvanian; Pine Mountain, Bell County, Kentucky, USA)
by James St. John

Fossiliferous limestone with phylloidal algae (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 2
by James St. John

Overturned crossbeds in sandstone (Sharon Formation, Lower Pennsylvanian; Virginia Kendall Ledges, Ohio, USA) 4
by James St. John

Cannel City-Amburgy Coal Zone (between channel sandstones, Pikeville Formation, Middle Pennsylvanian; Jackson North roadcut, Breathitt County, Kentucky, USA) 5
by James St. John

Coshocton Flint (Upper Mercer Flint, Middle Pennsylvanian; Ohio, USA) 18
by James St. John

Pedogenic breccia (Conemaugh Group, Upper Pennsylvanian; creek cut on the western side of Caldwell, Ohio, USA) 16
by James St. John

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 249
by James St. John