Lower Heterobranchia
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| Lower Heterobranchia | |
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| A live individual of Architectonica perspectiva | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Infraclass: | Lower Heterobranchia |
| Superfamilies | |
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See text | |
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 subclass Heterobranchia. [1]
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.[2]
Taxonomy
[edit]2005 taxonomy
[edit]In the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005,[3] the Lower Heterobranchia is an Informal Group. Superfamilies within the Lower Heterobranchia include:
- Unassigned to a superfamily (orbitestellid-shells)
- Family Cimidae
- † Family Dolomitellidae
- † Family Heterosubulitidae
- † Family Kuskokwimiidae
- † Family Misurinellidae
- Family Orbitestellidae
- Family Tjaernoeiidae
- Family Xylodisculidae
- superfamily Acteonoidea
- superfamily Architectonicoidea
- superfamily Glacidorboidea
- superfamily Mathildoidea
- † superfamily Nerineoidea
- superfamily Omalogyroidea
- superfamily Pyramidelloidea
- superfamily Ringiculoidea
- superfamily Rissoelloidea
- † superfamily Streptacidoidea
- superfamily Valvatoidea
(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)[4] have redefined major groups within the Heterobranchia: they moved Glacidorboidea and Pyramidelloidea to Panpulmonata.[4]
2014 taxonomy
[edit]Wägele et al. (2014):[5] moved Rissoelloidea and Acteonoidea from Lower Heterobranchia to Euthyneura.
2016 taxonomy
[edit]Kano et al. (2016):[6] moved Ringiculoidea from Lower Heterobranchia to Euthyneura.
So the following taxa remain within the Lower Heterobranchia:
- Unassigned to a superfamily (orbitestellid-shells)
- Family Cimidae
- † Family Dolomitellidae
- † Family Heterosubulitidae
- † Family Kuskokwimiidae
- † Family Misurinellidae
- Family Orbitestellidae
- Family Tjaernoeiidae
- Family Xylodisculidae
- superfamily Architectonicoidea
- superfamily Mathildoidea
- † superfamily Nerineoidea
- superfamily Omalogyroidea
- † superfamily Streptacidoidea
- superfamily Valvatoidea
References
[edit]- ^ a b WoRMS (2020). "Lower Heterobranchia". Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1054700 on 2020-05-16
- ^ "Molluscsoftasmania.net".
- ^ 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.
- ^ 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.
- ^ 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
- ^ 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. Bibcode:2016NatSR...630908K. doi:10.1038/srep30908. ISSN 2045-2322. PMC 4976385. PMID 27498754.
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