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Gyraulus

From Wikipedia, the free encyclopedia

Gyraulus
Temporal range: Early Cretaceous - Recent, 125–0 Ma
Views of a Gyraulus takhteevi shell
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Superorder: Hygrophila
Family: Planorbidae
Subfamily: Planorbinae
Tribe: Planorbini
Genus: Gyraulus
Charpentier, 1837[1]
Type species
Planorbis albus O. F. Müller, 1774
Synonyms
List
  • Anisus (Gyraulus) Charpentier, 1837
  • Anisus (Microanisus) Moskvicheva, 1986
  • Caillaudia Bourguignat, 1883
  • Choanomphalodes Lindholm, 1927
  • Choanomphalus (Lamorbis) Starobogatov, 1967
  • Choanomphalus (Pseudogyraulus) Prozorova & Starobogatov, 1997
  • Glyptanisus Iredale, 1943
  • Gyraulus (Caillaudia) Bourguignat, 1883
  • Gyraulus (Carinogyraulus) Polinski, 1929
  • Gyraulus (Choanomphalodes) Lindholm, 1927
  • Gyraulus (Gyraulus) Charpentier, 1837
  • Gyraulus (Lamorbis) Starobogatov, 1967
  • Gyraulus (Microanisus) Moskvicheva, 1986
  • Gyraulus (Nautilinus) Mousson, 1872
  • Gyraulus (Pygmanisus) Iredale, 1943
  • Gyraulus (Torquis) Dall, 1905
  • Lamorbis Starobogatov, 1967
  • Plananisus Iredale, 1943
  • Planaria T. Brown, 1827
  • Planorbis (Gyraulus) ICharpentier, 1837
  • Planorbis (Torquis) IDall, 1905
  • Ptychospira Slavík, 1869
  • Pygmanisus Iredale, 1943
  • Trochlea Haldeman, 1842

Gyraulus is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.[2]

The genus Gyraulus is known from the Early Cretaceous to the present. Fossils attributed to Gyraulus sp. have been found in the lakebottom sediments of the Yixian Formation in China, dating to 125 million years ago.[3]

Description

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Shells of the species within this genus are small, and are mostly almost planispiral in their coiling.

Distribution and habitat

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The distribution of this genus is Holarctic. These snail snails live on water plants in freshwater.

Species

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The following species are recognised in the genus Gyraulus:[4]

References

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  1. ^ Charpentier J. de (1837). "Catalogue des mollusques terrestres et fluviatiles de la Suisse. Formant la seconde partie de la faune Helvétique". Neue Denkschriften der Allgemeinen Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften - Nouveaux Mémoires de la Société Helvétique des Sciences Naturelles 1(2): 1-28, Tab. I-II [= 1-2]. Neuchatel. page 21.
  2. ^ Ivanov M., Hrdličková, S. & Gregorová, R. (2001) Encyklopedie zkamenělin. – Rebo Productions, Dobřejovice, 1. vydání, 312 pp., page 126. (in Czech)
  3. ^ Pan, H. and Zhu, X. (2007). "Early Cretaceous non-marine gastropods from the Xiazhuang Formation in North China." Cretaceous Research, 28(2): 215-224. doi:10.1016/j.cretres.2006.12.001
  4. ^ "WoRMS - World Register of Marine Species - Out of scope". www.marinespecies.org. Retrieved 2025-03-28.
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