fossiliferous

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 198
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

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

Yabeina globosa fusulinid foraminifera (Akasaka Limestone, Upper Permian; Kinshozan, Gifu, Honshu, Japan) 1
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

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

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

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

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

Fossiliferous limestone (Poverty Run Limestone, Lower Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 5
by James St. John

Fossiliferous limestone (Greenhorn Formation, Upper Cretaceous; Ponca State Park, Nebraska, USA) 2
by James St. John

Fossiliferous limestone (Lowellville Limestone, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 2
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 21
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

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Taylor & Bell Quarry, near Marble Cliff, Ohio, USA) 11
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) 7
by James St. John

Productid brachiopod in flint-bearing fossiliferous limestone (Upper Mercer Limestone, Middle Pennsylvanian; Nellie, Ohio, USA) 3
by James St. John

Grewingkia canadensis (fossil rugose coral) encrusted with bryozoans (Whitewater Formation, Upper Ordovician; Richmond South roadcut, Wayne County, Indiana, USA) 1
by James St. John

Fossiliferous limestone (Poverty Run Limestone, Lower Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 6
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 60
by James St. John

"Solenopora" jurassica (fossil red algae) in limestone (White Limestone Formation, Middle Jurassic, 165-168 Ma; Foss Cross Quarry, Gloucestershire, England) 1
by James St. John

Waynesville Formation (Upper Ordovician; Roaring Run, Warren County, Ohio, USA) 44
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 34
by James St. John

Glacial grooves from Pleistocene glaciation on Columbus Limestone (Middle Devonian) (Glacial Grooves State Park, Kelleys Island, Ohio, Lake Erie, USA) 4
by James St. John

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

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 19
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 9
by James St. John

Fossiliferous limestone (Upper Mercer Limestone, Middle Pennsylvanian; Noland Tunnel's north portal outcrop, Tunnel Hill, Coshocton County, Ohio, USA) 2
by James St. John

Esconites zelus (fossil worm) (Mazon Creek Lagerstätte, Middle Pennsylvanian; Mazon Creek area, Illinois, USA) 2
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 5
by James St. John

Fossiliferous limestone (Gravel Point Formation, Middle Devonian; near South Point, west of Charlevoix, Michigan, USA) 2
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 163
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 159
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 162
by James St. John

Fasciculiconcha knightii (fossil bivalve) (Upper Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 7
by James St. John

Ellipsocephalus hoffii (fossil trilobites) (Jince Formation, Middle Cambrian; vicinity of Jince, Stredocesky Region, Bohemia, Czech Republic) 3
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 37
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 160
by James St. John

Glacial grooves on limestone (Kelleys Island, Lake Erie, Ohio, USA) 169
by James St. John