Summary
Pyramidelloidea is a superfamily of mostly very small sea snails, marine gastropod mollusks and micromollusks within the clade Panpulmonata.[2]
| Pyramidelloidea | |
|---|---|
| |
| live Turbonilla acutissima | |
| |
| Two views of a shells of Pyramidella acus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Subcohort: | Panpulmonata |
| Superfamily: | Pyramidelloidea J. E. Gray, 1840[1] |
This is a voluminous taxon: above the species level close to 400 named taxa are referred to this gastropod superfamily.
Pyramidelloidea has both fossil and recent members. They live as ectoparasites on bivalve molluscs and polychaete worms, and have a sharp, piercing stylet instead of a radula.[3]
Distribution edit
This taxon is found worldwide.
Taxonomy edit
1999 taxonomy edit
Taxonomy by Schander, Van Aartsen & Corgan (1999):[4]
- Superfamily Pyramidelloidea Gray, 1840
- Family Amathinidae Ponder, 1987
- Family Ebalidae Warén, 1994 - synonym: Anisocyclidae van Aartsen, 1995
- Family Odostomiidae Pelseneer, 1928
- Subfamily Odostomiinae Pelseneer, 1928
- Subfamily Chrysallidinae Saurin, 1958
- Subfamily Odostomellinae Saurin, 1958
- Subfamily Cyclostremellinae Moore, 1966
- Family Pyramidellidae J. E. Gray, 1840
- Subfamily Pyramidellinae J.E. Gray, 1840
- Subfamily Sayellinae Wise, 1996
- Family Syrnolidae Saurin, 1958
- Subfamily Syrnolinae Saurin, 1958
- Subfamily Tiberiinae Saurin, 1958
- Family Turbonillidae Bronn, 1849
- Subfamily Turbonillinae Bronn, 1849
- Subfamily Eulimellinae Saurin, 1958
- Subfamily Cingulininae Saurin, 1959
2005 taxonomy edit
Pyramidelloidea has been classified within the informal group Lower Heterobranchia in the taxonomy of Bouchet & Rocroi (2005).[5]
Taxonomy of Bouchet & Rocroi, 2005:
- Superfamily Pyramidelloidea
- Family Pyramidellidae
- Family Amathinidae
- † Family Heteroneritidae
- Family Murchisonellidae
2010 taxonomy edit
Jörger et al. (2010)[2] have redefined major groups within the Heterobranchia and they moved Pyramidelloidea to Panpulmonata.[2]
Pyramidelloidean genera of uncertain familial position edit
- Bidentata de Castellanos, 1982
- Calyptopolyptychia Gougerot, 1968
- Laeviselica Gougerot & Le Renard, 1977
- Lysacme Dall & Bartsch, 1904
- Microthyca A. Adams, 1863
- Oopyramis Thiele, 1930
- Sulcorinella Dall & Bartsch, 1904
References edit
- ^ Gray, J. E. (1840). Synopsis of the contents of the British Museum (42nd ed.). London. pp. 370 pp.
- ^ a b c Jörger K. M., Stöger I., Kano Y., Fukuda H., Knebelsberger T. & Schrödl M. (2010). "On the origin of Acochlidia and other enigmatic euthyneuran gastropods, with implications for the systematics of Heterobranchia". BMC Evolutionary Biology 10: 323. doi:10.1186/1471-2148-10-323.
- ^ Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 376. ISBN 0-03-056747-5.
- ^ Schander, C.; van Aartsen, J. J.; Corgan, J. C. (1999). "Families and genera of the Pyramidelloidea (Mollusca: Gastropoda)". Bollettino Malacologico. 34 (9–12): 145–166.
- ^ Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. 47 (1–2). Hackenheim, Germany: ConchBooks: 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.