File:Callinectes sapidus (blue crab carapace).jpg
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English: Callinectes sapidus Rathbun, 1896 - dorsal view of a blue crab carapace (~14.8 centimeters across at it widest)
The crustaceans are a large group of arthropods that inhabit marine, marginal marine, freshwater, and terrestrial habitats. The crustaceans include crabs, lobsters, shrimp, crayfish, barnacles, ostracods, and other organisms. The oldest fossil crustaceans are in the Cambrian. The group experienced a significant radiation in the oceans during the Mesozoic Marine Revolution. Info. from Witherington & Witherington (2007): "Blue crabs are swimming crabs in the Family Portunidae. Blue crabs have pointed projections on the sides of their carapace and swimming paddles on their hind legs. They are greenish and blue. Females have orange highlights and clawtips, and are more commonly beached than males. Female blue crabs are occasionally beached after migrating from estuaries to spawn at sea. Blue crabs are swift predators that eat mollusks, fishes, and other crabs." Classification: Animalia, Arthropoda, Crustacea, Malacostraca, Decapoda, Brachyura, Portunidae More info. at: en.wikipedia.org/wiki/Crustacean and en.wikipedia.org/wiki/Callinectes_sapidus Reference cited: Witherington & Witherington (2007) - Florida's Living Beaches, a Guide for the Curious Beachcomber. Sarasota, Florida. Pineapple Press, Inc. 326 pp. |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/49056827256/ |
| 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@N05/49056827256. It was reviewed on 15 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 15:09, 15 October 2020 | | 3,580 × 1,899 (3.9 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/49056827256/ with UploadWizard |
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