File:Colpodexylon deatsii fossil land plant (Oneonta Formation, Upper Devonian; Sullivan County, southeastern New York State, USA) 2 (15521289722).jpg
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Colpodexylon deatsii Banks, 1944 fossil land plant from the Devonian of New York State, USA. (public display, FMNH PP 33689, Field Museum of Natural History, Chicago, Illinois, USA) 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. Colpodexylon is a fossil lycopod, the best-known plant group in the Paleozoic fossil record. Each dimple on the stem is a leaf attachment star. The leaves were trifurcate (three-branched) and very thin & elongated, like modern pine needles. Leaves were attached to the stem in a subtle helical/spiral arrangement. Classification: Plantae, Lycophyta, Protolepidodendrales Stratigraphy: Oneonta Formation, lower Upper Devonian Locality: Sullivan County, southeastern New York State, USA |
| Date | |
| Source | Colpodexylon deatsii fossil land plant (Oneonta Formation, Upper Devonian; Sullivan County, southeastern New York State, USA) 2 |
| Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15521289722. 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 | 19:04, 6 May 2015 | | 2,838 × 1,470 (1.9 MB) | Natuur12 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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