File:Nautiloid cephalopods (Paleozoic).jpg
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| Description |
English: These fossils are straight-shelled nautiloid cephalopods - they were relatively common components of Paleozoic oceans. A nautiloid is basically a squid-in-a-shell. Most species had straight, gently tapering shells, but some had loosely coiled or tightly coiled shells. The shells were mostly hollow, aragonitic, and had regularly-spaced internal walls. The entire group is represented in today's oceans by five living species of chambered nautilus, all of which have a coiled shell: Nautilus pompilius, Nautilus macromphalus, Nautilus stenomphalus, Nautilus belauensis, and Allonautilus scrobiculatus.
This material is derived from a Paleozoic quarry, probably in Ohio. Classification: Animalia, Mollusca, Cephalopoda, Nautiloidea Locality: foot-worn paver stone on the northern side of Marion Station, Marion, Ohio, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/50007469733/ |
| 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@N05/50007469733. It was reviewed on 20 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:29, 20 October 2020 | | 1,500 × 1,125 (2.7 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50007469733/ with UploadWizard |
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