Busycon carica fossil knobbed whelk snail shell (Pleistocene; Lee Creek Mine, Aurora, North Carolina, USA) 4 (31937146076)
Description :
Description: Busycon carica (Gmelin, 1791) - fossil knobbed whelk shell (apertural view) from the Pleistocene of North Carolina, USA. (19 cm tall) Of all the molluscs, the gastropods (snails) have made the most ecological adaptations. They can be found in almost all fundamental environments: marine, freshwater, terrestrial. Most gastropods live in the ocean, and have a single, asymmetrically coiled, external shell of calcium carbonate (CaCO3 - usually aragonite). The hard calcareous shell is the most easily fossilized part of the gastropod. The soft parts of a snail (the “slug” portion) include a well developed head having eyes, tentacles, and a mouth, and a well developed, strong, muscular foot used principally for locomotion. The shell is carried upright on the snail’s back, or is partially dragged behind. When threatened by a predator, many snails can retract their soft parts into the shell’s interior for protection. Many fossil snails in the Paleozoic rock record are often not well preserved, or are preserved as internal molds. The original aragonite of many gastropod shells is not stable on geologic time scales, and often recrystallizes or dissolves completely away. Fossil snail shells in Mesozoic and Cenozoic rocks are usually better preserved. Classification: Animalia, Mollusca, Gastropoda, Neogastropoda, Muricoidea, Melongenidae Age: Pleistocene Locality: Lee Creek Mine, Aurora, eastern North Carolina, USA. Date: 29 December 2016, 21:37. Source: Busycon carica fossil knobbed whelk snail shell (Pleistocene; Lee Creek Mine, Aurora, North Carolina, USA) 4. Author: James St. John.
Inclus dans les pages suivantes :
- Life
- Cellular (Organismes cellulaires)
- Eukaryota (eucaryotes)
- Opisthokonta
- Metazoa (animaux)
- Bilateria
- Protostomia
- Spiralia
- Mollusca (mollusques)
- Gastropoda
- Caenogastropoda
- Neogastropoda
- Buccinoidea
- Buccinidae
- Busyconinae
- Busycon
- Busycon carica
Cette image ne figure dans aucune collection.
Informations sur la provenance
- licence
- cc-by-3.0
- droit d’auteur
- James St. John|sourceurl=https://flickr.com/photos/47445767@N05/31937146076%7Carchive=https://web.archive.org/web/20200418144749/https://flickr.com/photos/47445767@N05/31937146076%7Creviewdate=2018-12-02 07:45:28|reviewlicense=cc-by-2.0|reviewer=FlickreviewR 2
- créateur
- James St. John|sourceurl=https://flickr.com/photos/47445767@N05/31937146076%7Carchive=https://web.archive.org/web/20200418144749/https://flickr.com/photos/47445767@N05/31937146076%7Creviewdate=2018-12-02 07:45:28|reviewlicense=cc-by-2.0|reviewer=FlickreviewR 2
- source
- Flickr user ID jsjgeology
- original
- fichier de média d’origine
- visiter la source
- site partenaire
- Wikimedia Commons
- ID