{{short description|Order of sea snails}} {{Automatic taxobox | fossil_range = {{fossil range|Ordovician|Recent|ref=<ref name="Pond&Lind2008">{{cite book|last1=Lindberg|first1=edited by Winston F. Ponder, David R.|title=Phylogeny and evolution of the Mollusca|date=2008|publisher=University of California Press|location=Berkeley|isbn=978-0-520-25092-5}}</ref>}} | image = | image_caption = | taxon = Trochida | authority = | synonyms = | subdivision_ranks = Superfamilies | subdivision = See text }}
'''Trochida''' is an order of small to very large vetigastropods. It includes recent and extinct sea snails with gills and an operculum.<ref name="WoRMS">MolluscaBase (2018). Trochida. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1052448 on 2019-01-06</ref>
==Taxonomy== Extant trochomorphs stem from a large, archaic clade.<ref>Zapata F., N.G. Wilson, M. Howison, S.C.S. Andrade, K.M. Jörger, M. Schr*odl, F. E. Goetz, G.Giribet & C.W. Dunn, 2014, ''Phylogenomic analyses of deep gastropod relationships reject orthogastropoda''. Proceedings of the Royal Society of London, B, 281: 20141739</ref> According to Uribe ''et al.'' (2016) the superfamilies Angarioidea and Phasianelloidea are deeply nested within the superfamily Trochoidea sensu Williams (2012).<ref>Uribe J.E., Y. Kano, J. Templado & R. Zardoya, 2016a, ''Mitogenomics of Vetigastropoda: insights into the evolution of pallial symmetry.'' Zoologica Scripta, 45: 145–159.</ref><ref>Williams, S.T., 2012, ''Advances in molecular systematics of the vetigastropod superfamily Trochoidea.'' Zoologica Scripta, 41(6): 571–595.</ref> The revised taxonomy (2017) of Bouchet ''et al.'' therefore only recognizes the superfamily Trochoidea (including Angarioidea and Phasianelloidea).
==Superfamilies== * Trochoidea <small>Rafinesque, 1815</small> ;Synonyms: * Angarioidea <small>Gray, 1857</small>: synonym of Trochoidea <small>Rafinesque, 1815</small> * Phasianelloidea <small>Swainson, 1840</small>: synonym of Trochoidea <small>Rafinesque, 1815</small>
==References== {{Reflist}} * Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526
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Category:Vetigastropoda