Lower Heterobranchia

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Lower Heterobranchia
Architectonica sp. (Marine snail).jpg
A live individual of Architectonica perspectiva
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia

informal group Lower Heterobranchia

Synonyms

Allogastropoda

Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly evolved sea slugs and sea snails, (marine gastropod mollusks) within the clade Heterobranchia. Although the great majority of Lower Heterobranchs are indeed marine, a few have succeeded in making the transition to freshwater.

Description[edit]

The shell shapes in this group are typically those that are seen in the sundial, pyramid, rissoella and orbitestellid families of snails.[1]

Taxonomy[edit]

2005 taxonomy[edit]

In the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005,[2] the Lower Heterobranchia is an Informal Group. Superfamilies within the Lower Heterobranchia include:

(Taxa that are exclusively fossil are indicated with a dagger †)

For a more detailed taxonomy see: Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)#Informal group "Lower Heterobranchia" (= Allogastropoda)

2010 taxonomy[edit]

Jörger et al. (2010)[3] have redefined major groups within the Heterobranchia: they moved Glacidorboidea and Pyramidelloidea to Panpulmonata.[3]

2014 taxonomy[edit]

Wägele et al. (2014):[4] moved Rissoelloidea and Acteonoidea from Lower Heterobranchia to Euthyneura.

2016 taxonomy[edit]

Kano et al. (2016):[5] moved Ringiculoidea from Lower Heterobranchia to Euthyneura.

So the following taxa remain within the Lower Heterobranchia:

References[edit]

  1. ^ http://www.molluscsoftasmania.net/Subclass%20pages/Heterobranchia.html
  2. ^ Bouchet P.; Rocroi J.-P.; Frýda J.; Hausdorf B.; Ponder W.; Valdés Á. & Warén A. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology. Hackenheim, Germany: ConchBooks. 47 (1-2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997. 
  3. ^ a b 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.
  4. ^ Wägele H., Klussmann-Kolb A., Verbeek E. & Schrödl M. (2014). "Flashback and foreshadowing—a review of the taxon Opisthobranchia". Organisms Diversity & Evolution 14(1): 133–149. doi:10.1007/s13127-013-0151-5
  5. ^ Kano, Yasunori; Brenzinger, Bastian; Nützel, Alexander; Wilson, Nerida G.; Schrödl, Michael (2016-08-08). "Ringiculid bubble snails recovered as the sister group to sea slugs (Nudipleura)". Scientific Reports. 6: 30908. doi:10.1038/srep30908. ISSN 2045-2322. Retrieved 2017-05-12.