File:Taxocrinus sp. (fossil crinoid) (Meadville Shale, Lower Mississippian; Lodi, Ohio, USA) 1 (35806677935).jpg
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[edit]DescriptionTaxocrinus sp. (fossil crinoid) (Meadville Shale, Lower Mississippian; Lodi, Ohio, USA) 1 (35806677935).jpg |
Taxocrinus sp. - fossil crinoid from the Mississippian of Ohio, USA. (CMNH 5685, Cleveland Museum of Natural History, Cleveland, Ohio, USA) Crinoids (sea lilies) are sessile, benthic, filter-feeding, stalked echinoderms that are relatively common in the marine fossil record. Crinoids are also a living group, but are relatively uncommon in modern oceans. A crinoid is essentially a starfish-on-a-stick. The stick, or stem, is composed of numerous stacked columnals, like small poker chips. Stems and individual columnals are the most commonly encountered crinoid fossils in the field. Intact, fossilized crinoid heads (crowns, calices, cups) are unusual. Why? Upon death, the crinoid body starts disintegrating very rapidly. The soft tissues holding the skeletal pieces together decay and the skeleton falls apart. Classification: Animalia, Echinodermata, Crinoidea, Flexibilia, Taxocrinida, Taxocrinidae Stratigraphy: Meadville Shale Member, lower Cuyahoga Formation, Kinderhookian Stage, lower Lower Mississippian Locality: unrecorded/undisclosed site at or near Lodi, southwestern Medina County, northeastern Ohio, USA See info. at: <a href="https://en.wikipedia.org/wiki/Crinoid" rel="nofollow">en.wikipedia.org/wiki/Crinoid</a> |
Date | |
Source | Taxocrinus sp. (fossil crinoid) (Meadville Shale, Lower Mississippian; Lodi, Ohio, USA) 1 |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/35806677935 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 December 2019
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current | 18:06, 7 December 2019 | 1,264 × 3,487 (3.45 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Date and time of data generation | 14:30, 3 March 2013 |
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File change date and time | 21:49, 8 July 2017 |
Exif version | 2.21 |
Date and time of digitizing | 14:30, 3 March 2013 |
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Date metadata was last modified | 17:49, 8 July 2017 |
Unique ID of original document | 9AF20055F4AE33505D63CF763923BA13 |