osagean

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

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; cliff face west of Black Hand Gorge, Ohio, USA) 1
by James St. John

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

Trace fossils in sandstone (Logan Formation, Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 5
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 4
by James St. John

Zoophycos trace fossil in siliciclastics (Vinton Member, Logan Formation, Lower Mississippian; Irish Ridge East roadcut, near Trinway, Ohio, USA) 2
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; outcrop along old interurban line, Black Hand Gorge, Ohio, USA) 1
by James St. John

Actinocrinites gibsoni (fossil crinoid) (Edwardsville Formation, Lower Mississippian; Crawfordsville area, Montgomery County, Indiana, USA) 3
by James St. John

Crinoid head (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2
by James St. John

Symmetrical ripple marks (Vinton Member, Logan Formation, Lower Mississippian; Dillon Reservoir railroad cut, Muskingum County, Ohio, USA)
by James St. John

Encrinite (crinoidal limestone) (Ft. Payne Limestone, Lower Mississippian; Lake Cumberland, Kentucky, USA) 17
by James St. John

Geodized auloporid coral mass (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 1
by James St. John

Trace fossils in fine-grained sandstone (Henley Member, Borden Formation, Lower Mississippian; Tener Mountain roadcut, southern Ohio, USA) 9
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 2
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; outcrop along old interurban line, Black Hand Gorge, Ohio, USA) 2
by James St. John

Fossiliferous sandstone (Byer Sandstone, Lower Mississippian; Dugway Outcrop, Newark, Ohio, USA) 1
by James St. John

Floyds Knob Bed (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 4
by James St. John

Shale ("Middle Blue", Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 4
by James St. John

Sandstone-dominated overburden over "Middle Blue" shales (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 15
by James St. John

Stylolite in limestone (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 3
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 2
by James St. John

Quartzose sandstones (Byer Sandstone over Black Hand Sandstone, Lower Mississippian; old quarry at Black Hand Gorge, Ohio, USA) 8
by James St. John

Gray shale (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 9
by James St. John

Maury Shale (Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 26
by James St. John

"Liesegang banding" in sandstone (Vinton Member, Logan Formation, Lower Mississippian; Mohawk Dam roadcut, northwest of Nellie, Ohio, USA) 2
by James St. John

Sandstone (Allensville Member, Logan Formation, Lower Mississippian; Sugar Loaf Hill, Granville, Ohio, USA) 2
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Rock, Licking Gorge, Ohio, USA) 1
by James St. John

"Liesegang banding" in sandstone (Vinton Member, Logan Formation, Lower Mississippian; Mohawk Dam roadcut, northwest of Nellie, Ohio, USA) 3
by James St. John

Geodized auloporid coral mass (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 7
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 8
by James St. John

Encrinite (crinoidal limestone) (Ft. Payne Limestone, Lower Mississippian; Lake Cumberland, Kentucky, USA) 21
by James St. John

Fossiliferous sandstone (Byer Sandstone Member, Logan Formation, Lower Mississippian; eastern Ohio, USA) 2
by James St. John

Encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 18
by James St. John

Crinoid-rich shales (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2
by James St. John

Sandstone (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 3
by James St. John

Zoophycos trace fossil in siliciclastics (Vinton Member, Logan Formation, Lower Mississippian; Irish Ridge East roadcut, near Trinway, Ohio, USA) 3
by James St. John

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

Cross-bedding in quartzose sandstone (Black Hand Sandstone, Lower Mississippian; railroad cut west of Black Hand Gorge, Ohio, USA) 1
by James St. John

Fossiliferous sandstone (Byer Sandstone, Lower Mississippian; Dugway Outcrop, Newark, Ohio, USA) 5
by James St. John

Chertified encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 4
by James St. John

Chertified encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 1
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 5
by James St. John

Gray shale (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 11
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Rock, Licking Gorge, Ohio, USA) 3
by James St. John

Gray shale (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 12
by James St. John

Fossil shark tooth (Sanders Group, Mississippian; Henderson Creek roadcut, Lawrence County, Indiana, USA) 2
by James St. John

Quartzose sandstones (Byer Sandstone over Black Hand Sandstone, Lower Mississippian; railroad cut west of Black Hand Gorge, Ohio, USA) 1
by James St. John

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

Agaricocrinus sp. (fossil crinoid) (Fort Payne Formation, Lower Mississippian; Lake Cumberland, Kentucky, USA) 5
by James St. John

Cross-bedding in quartzose sandstone (Black Hand Sandstone, Lower Mississippian; railroad cut west of Black Hand Gorge, Ohio, USA) 4
by James St. John

Small mud nodules (Vinton Member, Logan Formation, Lower Mississippian; Rt. 16 roadcut, northeast of Frazeysburg, Ohio, USA) 3
by James St. John

Zoophycos trace fossil (Logan Formation, Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 13
by James St. John

Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 9
by James St. John

Chertified encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 5
by James St. John

Fossiliferous sandstone (Vinton Member, Logan Formation, Lower Mississippian; Toboso East railroad cut, Licking County, Ohio, USA) 6
by James St. John

Mississippian-Pennsylvanian unconformity (Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 18
by James St. John

Cavernous weathering in quartzose sandstone (Black Hand Sandstone, Lower Mississippian; railroad cut west of Black Hand Gorge, Ohio, USA) 2
by James St. John

Shales (Vinton Member, Logan Formation, Lower Mississippian; Rt. 16 roadcut, northeast of Frazeysburg, Ohio, USA) 2
by James St. John

Zoophycos trace fossil (Vinton Member, Logan Formation, Lower Mississippian; Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 2
by James St. John