File:Lepidodendron fossil branch in ferruginous siltstone (Pottsville Group, Pennsylvanian; Irish Ridge East Outcrop, northwestern Muskingum County, eastern Ohio, USA) (15662851289).jpg
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Lepidodendron fossil branch in ferruginous siltstone from the Pennsylvanian of Ohio, USA. (12.4 cm across along the base) Plants are multicellular, photosynthetic eucaryotes. The oldest known land plant body fossils are Silurian in age. Fossil root traces of land plants are known back in the Ordovician. The Devonian was the key time interval during which land plants flourished and Earth experienced its first “greening” of the land. The earliest land plants were small and simple and probably remained close to bodies of water. By the Late Devonian, land plants had evolved large, tree-sized bodies and the first-ever forests appeared. Shown above is a fossil lycopod plant in ferruginous siltstone. The fossil is a branching stem that appears to be a cast (sediments have filled the space where the wood used to be). The branch is partially coated with a crust of carbonized wood. Classification: Plantae, Lycophyta, Lepidodendrales Stratigraphy: float from the Pottsville Group, upper Morrowan or lower Atokan Series, upper Lower Pennsylvanian or lower Middle Pennsylvanian Location: loose piece from near the base of the Irish Ridge East Outcrop - roadcut on southern side of eastbound entrance ramp from Rt. 60 to Rt. 16 (southeastern portion of Rt. 16-Rt. 60 interchange), north-northwest of the towns of Trinway & Dresden, northern Cass Township, northwestern Muskingum County, eastern Ohio, USA (40° 09’ 13.56” North, 82° 01’ 29.37” West) |
| Date | |
| Source | Lepidodendron fossil branch in ferruginous siltstone (Pottsville Group, Pennsylvanian; Irish Ridge East Outcrop, northwestern Muskingum County, eastern Ohio, USA) |
| Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15662851289. It was reviewed on 6 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 19:05, 6 May 2015 | | 4,000 × 2,625 (3.75 MB) | Natuur12 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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