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Original file (1,519 × 799 pixels, file size: 1.45 MB, MIME type: image/jpeg)
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Summary
| Description |
Diplacanthus striatus (Agassiz, 1835) fossil fish from the Lower Devonian of Scotland (public display, FMNH PF 2198, Field Museum of Natural History, Chicago, Illinois, USA). Acanthodians are an extinct group of jawed fish that had spines along the anterior margin of each fin (see the blackish-colored spikes on the specimen shown here). The root word “acanth” in “acanthodian fish” means “spine”. Acanthodians were the first fish to evolve jaws and scales. Classification: Animalia, Chordata, Vertebrata, Acanthodii, Climatiiformes, Diplacanthida, Diplacanthidae |
| Date | |
| Source | Diplacanthus striatus fossil fish (Lower Devonian; Scotland) |
| Author | James St. John |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15149695488 (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. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:56, 7 December 2019 | | 1,519 × 799 (1.45 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
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