File:Barnacles (Sand Beach, Mt. Desert Island, Maine, USA) 6.jpg
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| Description |
English: The crustaceans are a large group of arthropods that inhabit marine, marginal marine, freshwater, and terrestrial habitats. The group include crabs, lobsters, shrimp, crayfish, barnacles, ostracods, and other organisms. The oldest fossil crustaceans are in the Cambrian. Crustaceans experienced a significant radiation in the oceans during the Mesozoic Marine Revolution.
The organisms seen here are barnacles, which are sessile, benthic, filter-feeding, marine crustaceans - they are obligate hard substrate encrusters. They are particularly common in intertidal, rocky shore environments. Barnacles can tolerate subaerial exposure during low tides but have to be in water at least occasionally. When submerged, they extend their feathery limbs to filter feed. The barnacle body is enclosed in a small, cinder cone volcano-shaped carapace composed of overlapping calcareous plates. Fossil barnacles first appear in Cambrian rocks. Classification: Animalia, Arthropoda, Crustacea, Maxillopoda, Cirripedia Locality: rocky shore at eastern end of Sand Beach, Mt. Desert Island, coastal Maine, USA (vicinity of 44° 19' 43.59" North latitude, 68° 10' 48.57" West longitude) More info. at: en.wikipedia.org/wiki/Crustacean and en.wikipedia.org/wiki/Barnacle |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/50790923217/ |
| 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@N05/50790923217. It was reviewed on 4 January 2021 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 | |
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| current | 14:46, 4 January 2021 | | 3,008 × 1,583 (3.5 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50790923217/ with UploadWizard |
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