crinoid

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 40
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 7
by James St. John

Fossiliferous limestone (Boggs Limestone, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 3
by James St. John

Shale-siltstone-sandstone (Logan Formation, Lower Mississippian; Jackson North roadcut, Ohio, USA) 3
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 2
by James St. John

Corals in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 13
by James St. John

Black shale over limestone (Blocher Member, New Albany Shale, Upper Devonian over North Vernon Limestone, Middle Devonian; drill core from Kavanaugh # 1-3 well, Daviess County, Indiana, USA) 1
by James St. John

Productid brachiopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA) 9
by James St. John

Ferruginous, pyritic-glauconitic dolostone (uppermost Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 1
by James St. John

Inferred Rushville Shale (Vinton Member, Logan Formation, Lower Mississippian; Route 16 roadcut northeast of Frazeysburg, Ohio, USA)
by James St. John

Slade Formation over Renfro Member over Nada Member (Mississippian; Interstate-64 roadcut north-northeast of Morehead, Kentucky, USA) 3
by James St. John

Corals in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 17
by James St. John

Ferruginous, pyritic-glauconitic dolostone (uppermost Boggs Member, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 3
by James St. John

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

Large favositid coral colony in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 6
by James St. John

Mudchip breccia in limestone (Boggs Limestone, Middle Pennsylvanian; ravine below Rt. 208, east of Dresden, Muskingum County, Ohio, USA) 4
by James St. John

reef0539
by NOAA Photo Library

expn6051
by NOAA Photo Library

yellow leaf scorpion fish, bolung 1, siladen, indonesia
by q.phia

ghost pipefish eye, bolung 1, siladen, indonesia
by q.phia

Aragonite needles in vug in dolostone (Vinton Member, Logan Formation, Lower Mississippian; Route 16 roadcut northeast of Frazeysburg, Ohio, USA) 7
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Route 16 roadcut northeast of Frazeysburg, Ohio, USA) 1
by James St. John

Fossiliferous sandstone (Logan Formation, Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 6
by James St. John

Ferruginous flint (Boggs Member, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 1
by James St. John

Fossiliferous limestone (Poverty Run Limestone, Lower Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 36
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 13
by James St. John

Putnam Hill Limestone (Middle Pennsylvanian; Old Riley Road Outcrop, Muskingum Co., Ohio, USA) 2
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 28
by James St. John

Lowellville Shale (Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 1
by James St. John

Hexagonaria sp. (fossil coral) (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 24
by James St. John

Encrusted paleopebble (Glen Dean Formation, Upper Mississippian; Rt. 62 roadcut, next to Rt. 3155 intersection, Leitchfield, Kentucky, USA) 3
by James St. John

cup corals, lekuan 3, siladen, indonesia, 2017
by q.phia

Corals in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 10
by James St. John

Ferruginous flint (Boggs Member, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 5
by James St. John

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 13
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

Slade Formation over Renfro Member over Nada Member (Mississippian; Interstate-64 roadcut north-northeast of Morehead, Kentucky, USA) 2
by James St. John

orangutang crab, liabale west, wakatobi, 2018
by q.phia

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

Bituminous coal (Middle Mercer Coal, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 5
by James St. John

Sandstone-dominated Logan Formation over shale-dominated Cuyahoga Formation (Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 17
by James St. John

Brachiopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 1
by James St. John

Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 4
by James St. John

expl2336
by NOAA Photo Library

At Mohamed's fossil store
by GOC53

Fossil favositid coral in limestone (Columbus Limestone, Middle Devonian; Quarry Trails Park, Columbus, Ohio, USA) 3
by James St. John

Ferruginous limestone (Boggs Member, Middle Pennsylvanian; Frazeysburg Pit, Muskingum County, Ohio, USA) 7
by James St. John

Brachiopods (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 1
by James St. John

Portwood Member over the Boyle Dolomite (Middle Devonian; Waco roadcut, Madison County, Kentucky, USA) 1
by James St. John

Fossiliferous ironstone (Licking County, Ohio, USA) 3
by James St. John

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

Shale (Logan Formation, Lower Mississippian; Jackson North roadcut, Ohio, USA) 3
by James St. John

Putnam Hill Limestone (Middle Pennsylvanian; Rt. 79 roadcut, Perry Township, Coshocton County, Ohio, USA) 9
by James St. John

Gastropod internal mold (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 4
by James St. John

Euphemites fossil mollusc in limestone (Putnam Hill Limestone, Middle Pennsylvanian; Rt. 541 roadcut, west of Tunnel Hill, Coshocton County, Ohio, USA) 2
by James St. John

Columbus Limestone (Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 17
by James St. John

Concretion in gray shale (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 4
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 14
by James St. John

Crinoid columnals and Cryptolithus fragments
by Kyle Hartshorn