rugosans

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 11
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 26
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 34
by James St. John

Brachiopods and corals in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 1
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 7
by James St. John

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 3
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 32
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 28
by James St. John

Fossil colonial corals (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 5
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 9
by James St. John

Acrocyathus proliferus (fossil coral) (Bangor Limestone, Upper Mississippian; Huntsville, Alabama, USA) 2
by James St. John

Porites astreoides (mustard hill coral) (San Salvador Island, Bahamas) 12
by James St. John

Hexagonaria sp. (fossil colonial rugose coral) (Middle Devonian; quarry northwest of Paulding, Ohio, USA) 5
by James St. John

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

Silicified rugose coral 3
by James St. John

Fletcheria guelphensis (fossil coral) (Silurian; Ottawa County, Ohio, USA) 1
by James St. John

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 1
by James St. John

Fletcheria guelphensis (fossil coral) (Silurian; Ottawa County, Ohio, USA) 2
by James St. John

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 9
by James St. John

Fossil colonial coral (Marblehead Member, Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 17
by James St. John

Large favositid coral colony in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 4
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 8
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 27
by James St. John

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 5
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 15
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 1
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 25
by James St. John

Rugose coral (Lockport Dolomite, Middle Silurian; quarry in Ottawa County, Ohio, USA)
by James St. John

Colonial rugose coral in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA) 5
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 27
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 24
by James St. John

Montastrea annularis (fossil coral) (Key Largo Limestone, Pleistocene; Stock Island, Florida, USA) 3
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 2
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 4
by James St. John

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

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 15
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 5
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 26
by James St. John

Colonial rugose coral in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA) 3
by James St. John

Silicified rugose coral 2
by James St. John

Colonial rugose coral in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA) 2
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 16
by James St. John

Solitary rugose coral (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 23
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 4
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 8
by James St. John

Solitary rugose corals (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 18
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 42
by James St. John

Solitary rugose coral (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 22
by James St. John

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

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 35
by James St. John

Solitary rugose coral (Marion Station, Ohio, USA) 3
by James St. John

Colonial rugose coral in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA) 1
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 6
by James St. John

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

Solitary rugose coral (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 21
by James St. John

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

Bethanyphyllum robustum (fossil coral) (Silica Formation, Middle Devonian; quarry northwest of Paulding, Ohio, USA) 4
by James St. John

Solitary rugose coral (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 19
by James St. John

Rugose coral & spiriferid brachiopod & trilobite tail (Silica Formation, Middle Devonian; Lafarge Paulding Quarry, near Paulding, Ohio, USA) 1
by James St. John

Rugose coral & spiriferid brachiopod & trilobite tail (Silica Formation, Middle Devonian; Lafarge Paulding Quarry, near Paulding, Ohio, USA) 2
by James St. John