brachiopod

Partially silicified Hexagonaria (fossil coral) (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 7
by James St. John

Lower Mercer Shale-Lower Mercer Limestone (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 3
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 9
by James St. John

Slickenlined argillaceous limestone (Maxville Limestone, Mississippian; Pleasant Valley Limestone Quarry, Muskingum County, Ohio, USA) 4
by James St. John

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

Pentamerus oblongus (fossil brachiopod) (Lockport Dolomite, Middle Silurian; quarry in Ottawa County, Ohio, USA) 1
by James St. John

The Chengjiang Biota, A Unique Window of the Cambrian Explosion (1996)
by James St. John

Well cuttings from the VanWinkle Unit # 1 petroleum well (west of Granville, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 3
by James St. John

Spirifer invalidistriatus (fossil brachiopods) (Byer Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 3
by James St. John

Pottsville Group over Maxville Limestone (Pleasant Valley Limestone Quarry, Muskingum County, Ohio, USA) 3
by James St. John

Diorama of a Cincinnatian seafloor (Late Ordovician) - nautiloid, algae, crinoids, bryozoans
by James St. John

Fossiliferous flint (Upper Mercer Flint, Middle Pennsylvanian; Tunnel Hill North Portal Outcrop, Coshocton County, Ohio, USA) 5
by James St. John

Brachiopod fossil in sandstone (Byer Sandstone, Lower Mississippian; west of Toboso, Ohio, USA) 1
by James St. John

Brachiopod-rich limestone
by Kyle Hartshorn

Fossiliferous chert (Upper Mercer Flint, Middle Pennsylvanian; Nellie West Outcrop, Coshocton County, Ohio, USA) 1
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 7
by James St. John

Productid brachiopod (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 7
by James St. John

Bryozoans in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Route 16 roadcut near Trinway, Ohio, USA) 3
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 8
by James St. John

Anthracospirifer fossil brachiopod in fossiliferous limestone (Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Gravel Point Formation, Middle Devonian; near South Point, west of Charlevoix, Michigan, USA) 7
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Toboso East railroad cut, Licking County, Ohio, USA) 3
by James St. John

Well cuttings from the VanWinkle Unit # 1 petroleum well (west of Granville, Ohio, USA) 3
by James St. John

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

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

Weathered, oxidized pyrite (Columbus Limestone or Delaware Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 4
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 2
by James St. John

Productid brachiopod (Lower Mercer Shale, Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 1
by James St. John

Brachiopods (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 6
by James St. John

Paraspirifer bownockeri (pyritized fossil brachiopod) (Silica Formation, Middle Devonian; northwestern Ohio, USA) 5
by James St. John

Ambocoelia brachiopods in shale (lower Boyle Formation, Middle Devonian; Emmanuel Baptist Church roadcut, Estill County, Kentucky, USA) 1
by James St. John

Brachiopod (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 10
by James St. John

Joint in limestone (Columbus Limestone, Middle Devonian; Indian Village Canyon, Columbus, Ohio, USA) 2
by James St. John

Chonetes sp. (fossil brachiopod) & fossil fish bone (Vinton Member, Logan Formation, Lower Mississippian; Route 16 roadcut northeast of Frazeysburg, Ohio, USA) 2
by James St. John

Vanport Limestone (Middle Pennsylvanian; Bear Hollow Road roadcut, central Flint Ridge, Ohio, USA) 2
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 3
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 1
by James St. John

Anthracospirifer fossil brachiopod in fossiliferous limestone (Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 3
by James St. John

Placopecten clintonius fossil scallop (Yorktown Formation, Pliocene; Lee Creek Phosphate Mine, near Aurora, North Carolina, USA)
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 5
by James St. John

Fossil rugose coral (Columbus Limestone, Middle Devonian; Ohio, USA) 3
by James St. John

Ostracods in dolostone (Tymochtee Dolomite, Upper Silurian; Latham Limestone Quarry, Pike County, Ohio, USA) 4
by James St. John

Quartz-lined fossil vug in flint (Upper Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 2
by James St. John

Brachiopod (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 9
by James St. John

Silicified Hexagonaria (fossil coral) (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 91
by James St. John

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 31
by James St. John

Fossil brachiopods in limestone (Columbus Limestone, Middle Devonian; Quarry Trails Park, Columbus, Ohio, USA) 5
by James St. John

Maxville Limestone (Mississippian; Jonathan Run, north-northwest of Fultonham, Ohio, USA) 9
by James St. John

Diorama of a Devonian seafloor - corals, Goldringia coiled cephalopod, straight-shelled cephalopod, crinoid, gastropods, trilobites, brachiopods, algae
by James St. John

Spiriferid brachiopods (Solsville Shale, Middle Devonian; Morrisville North roadcut, Madison County, New York State, USA) 10
by James St. John

Pottsville Group over Maxville Limestone (Pleasant Valley Limestone Quarry, Muskingum County, Ohio, USA) 7
by James St. John

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 11
by James St. John

Brachiopods in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 4
by James St. John

Crinoid stem in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, 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

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 5
by James St. John

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

Oleneothyris harlani (fossil brachiopod) (Tertiary; New Egypt, New Jersey, USA) 1
by James St. John