Invertebrates Codexery

Gastropod

Snails and slugs, the second-most diverse animal class.

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Gastropod

Myself · Public domain

Gastropods are a class of mollusks that includes snails and slugs, with an estimated 65,000 to 80,000 living species.[1] They are the second-most diverse animal class after insects.[2] The term "gastropod" derives from ancient Greek, combining "gastḗr" (stomach) and "poús" (foot), referencing the placement of the creature's foot beneath its digestive organs.[3]

Scientific classification

  1. KingdomAnimalia
  2. PhylumMollusca
  3. ClassGastropoda

Named by Cuvier, 1795

Sources: Wikipedia taxobox: Gastropod (CC BY-SA 4.0)

Key facts and history

The earliest gastropods appear in the fossil record from the Late Cambrian.[1] True crown-group gastropods are not seen until the Ordovician period.[4] The ancestors of many living gastropods evolved during the Mesozoic era.[5] During the Paleozoic era, bivalves outnumbered gastropods in terms of abundance.[4]

Primitive groups, some of which have surviving members today, make up the majority of Paleozoic gastropod species.[5] Anthracopupa, discovered in Europe's Carboniferous Coal Measures, represents one of the oldest known land-dwelling gastropods.[5] The total number of gastropod species is estimated quite differently by different authorities.[6]

What the cited sources add

Both the 1998 CSIRO book "Mollusca" and the 2003 Sinauer Associates volume "Invertebrates" provide information on the torsion process.[7][8][9]

References

  1. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: "Gastropoda", 2020; Strong, "Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families", Malacologia, December 31, 2017, p. 1–526; Strong, "Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families", Malacologia, December 31, 2017, p. 1–526 (original not read by us) en.wikipedia.org
  2. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: McArthur, A.G., "Molecular Systematics and Phylogeography of Mollusks", Smithsonian Books, 2003, p. 140–160 (original not read by us) en.wikipedia.org
  3. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: Cuvier, "Second mémoire sur l'organisation et les rapports des animaux à sang blanc, dans lequel on traite de la structure des Mollusques et de leur division en ordres, lu à la Société d'histoire naturelle de Paris, le 1; "Gastropod", Online Etymology Dictionary (original not read by us) en.wikipedia.org
  4. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: Be'Norr, K., and J. FnÍon, "Notes on the evolution and higher classification of the subclass Neritimorpha (Gastropoda) with the description of some new taxa", Geol. Et Palaeont 33, 1999, p. 219–235 (original not read by us) en.wikipedia.org
  5. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: Be'Norr, K., and J. FnÍon, "Notes on the evolution and higher classification of the subclass Neritimorpha (Gastropoda) with the description of some new taxa", Geol. Et Palaeont 33, 1999, p. 219–235; Jochum, "First record of the Paleozoic land snail family Anthracopupidae in the Lower Jurassic of China and the origin of Stylommatophora", Journal of Paleontology, 2020, p. 266–272; Be'Norr, K., and J. FnÍon, "Notes on the evolution and higher classification of the subclass Neritimorpha (Gastropoda) with the description of some new taxa", Geol. E en.wikipedia.org
  6. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: Chapman, A.D. (2009). Numbers of Living Species in Australia and the World, 2nd edition . Australian Biological Resources Study, Canberra. Accessed 12 January 2; Appeltans W., Bouchet P., Boxshall G.A., Fauchald K., Gordon D.P., Hoeksema B.W., Poore G.C.B., van Soest R.W.M., Stöhr S., Walter T.C., Costello M.J. (eds) (20; Chapman, A.D. (2009). Numbers of Living Species in Australia and the World, 2nd edition . Australian Biological Resources Study, Canberra. Accessed 12 January 2 (original not read by us) en.wikipedia.org
  7. Wikipedia, "Gastropod" (CC BY-SA 4.0), which cites: Kay, "Mollusca: The Southern Synthesis. Fauna of Australia", CSIRO Publishing, 1998, p. 565–604; Brusca, "Invertebrates", Sinauer Associates, Inc., 2003, p. 701–769 (we also read that source) en.wikipedia.org
  8. Open Library record, ISBN 9780643057562 ("Mollusca"). CC0 (metadata); book content not read. openlibrary.org
  9. Open Library record, ISBN 9780878930975 ("Invertebrates"). CC0 (metadata); book content not read. openlibrary.org

Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Gastropod (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.

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Sources

Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.

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