devonian

Colpodexylon deatsii fossil land plant (Oneonta Formation, Upper Devonian; Sullivan County, southeastern New York State, USA) 1
by James St. John

Stromatoporoid (Traverse Group, Middle Devonian; Sunset Park, Petoskey, Michigan, USA) 2
by James St. John

Furcaster paleozoicus fossil brittle star (Kaub Formation, Hunsrück Slate Group, Lower Devonian; Budenbach area, western Germany) 1
by James St. John

Chattanooga Shale (Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 16
by James St. John

Chattanooga Shale (Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 9
by James St. John

Concord Granite (Late Devonian; Concord, New Hampshire, USA) 1
by James St. John

Gastropod fossils (Solsville Shale, Middle Devonian; Morrisville North roadcut, Madison County, New York State, USA) 5
by James St. John

Crinoid lobolith (Paleozoic; USA) 1
by James St. John

Diorama of a Devonian seafloor - crinoid, corals, fenestrate bryozoan, trilobite, algae
by James St. John

Columbus Limestone (Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 8
by James St. John

Aikido at the Japanese Garden
by HandsLive

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

Abronia elliptica (sand verbena) (north of Bootlegger Canyon, west of Moab, Utah, USA) 4
by James St. John

Chattanooga Shale (Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 11
by James St. John

Leptodesma sp. (fossil bivalve) in limestone (Gravel Point Formation, Middle Devonian; near South Point, west of Charlevoix, Michigan, USA)
by James St. John

Black chert nodules (Delaware Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 6
by James St. John

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

Chattanooga Shale (Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 27
by James St. John

Leptaena fossil brachiopod in fossiliferous limestone (Middle Devonian; gravel bar clast, Olentangy River, Columbus, Ohio, USA) 2
by James St. John

Kenjutsu at the Japanese Garden
by HandsLive

Delaware Limestone over Columbus Limestone (Middle Devonian; Griggs Dam, Columbus, Ohio, USA) 5
by James St. John

Diorama of a Devonian seafloor 5
by James St. John

Quartz-permineralized fossil wood 32
by James St. John

Phacops rana crassituberculata (fossil trilobites) (Silica Formation, Middle Devonian; quarry northwest of Paulding, Ohio, USA) 8
by James St. John

Porphyritic diabase (Cape Ann, Massachusetts, USA) 5
by James St. John

Moellerina greenei (fossil charophyte oogonia) in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA)
by James St. John

Diorama of a Devonian seafloor - crinoids, corals, fenestrate bryozoan, trilobites, algae
by James St. John

Brachiopods in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 2
by James St. John

Granodiorite (Barre Pluton, Devonian, ~380 Ma; Rock of Ages Quarry, Graniteville, Vermont, USA) 2
by James St. John

Stylolite in limestone (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 13
by James St. John

Fossiliferous sandstone (Chemung Group, Devonian; southwestern New York State, USA)
by James St. John

Chattanooga Shale (Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 4
by James St. John

Diorama of a Devonian seafloor - crinoids, blastoids, algae, corals, fish
by James St. John

Jointed limestone (Columbus Limestone, Middle Devonian; lakehore outcrop near Marblehead Lighthouse, Ottawa County, Ohio, USA) 5
by James St. John

Diorama of a Devonian seafloor - strophomenid brachiopods and trilobite molt
by James St. John

Large potassium feldspar crystal in pegmatitic granite (Ruggles Pegmatite, Devonian; Ruggles Pegmatite Mine, New Hampshire, USA) 1
by James St. John

Fossiliferous limestone (Columbus Limestone, Middle Devonian; glacial clast near Reynoldsburg, Ohio, USA) 1
by James St. John

Strumming the Uke
by eileenmak

Brown calcite crystals lining vug in weathered limestone (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA)
by James St. John

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

Bellacartwrightia calliteles fossil trilobite & rugose corals in calcareous shale (Windom Shale, Middle Devonian; Penn Dixie site, New York State, USA)
by James St. John

Chattanooga Shale (Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 28
by James St. John

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

Archaeosigillaria fossil land plant (Devonian; Gilboa, southeastern New York State, USA) 1
by James St. John

Archaeosigillaria fossil land plant (Devonian; Gilboa, southeastern New York State, USA) 4
by James St. John

Diorama of a Devonian seafloor - corals, trilobite, algae, fish, fenestrate bryozoans, brachiopods
by James St. John

Seismite (Berea Sandstone, Upper Devonian to Lower Mississippian; Rocky Fork, Gahanna, Ohio, USA) 1
by James St. John

Ephedra sp. (Mormon tea) (Canyon de Chelly, Arizona, USA) 1
by James St. John

The Walk upto The Dwarfie Stane on The Island of Hoy, And to the Left up in the Cliffs is where 2 Sea Eagles were Reared and flew the Nest just recently...
by Rab .

Beware of falling rocks ⚠️ ... and nudists #Devon
by dullhunk

Allium cristophii (Persian onion) (Newark, Ohio, USA) 1
by James St. John

Stromatoporoid (probably the Traverse Group, Middle Devonian; Northport area, Michigan, USA) 4
by James St. John

Kimberlite (Indian Guide Kimberlite Field, Devonian; Iron Mountain Kimberlite District, Wyoming, USA) 6
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 29
by James St. John

Bar Harbor Formation (Silurian-Devonian; Bar Harbor, Mt. Desert Island, Maine, USA) 12
by James St. John

Symmetrical ripple marks (Berea Sandstone, Upper Devonian-Lower Mississippian; Blendon Woods Park, Columbus, Ohio, USA) 2
by James St. John

Breccia (Shatter Zone, Late Devonian; Sand Beach, Mt. Desert Island, Maine, USA) 2
by James St. John

Kimberlite (Arkhangelskaya Pipe, Late Devonian; Arkhangelsk Region, Russia) 10
by James St. John

Stylolite (Lucas Formation, Middle Devonian; Paulding County, Ohio, USA) 3
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 30
by James St. John