Provanna

{{Short description|Genus of gastropods}} {{Automatic taxobox |fossil_range = {{fossil range|Cretaceous|Recent|Cretaceous-Recent}} |image = Provanna hirokoae.png |image_caption = ''Provanna hirokoae'' |taxon = Provanna |authority = Dall, 1918 |synonyms_ref = <ref name="WoRMS" /> |synonyms = ''Trichotropis (Provanna)'' Dall, 1918 (original rank) |type_species = ''Trichotropis (Provanna) lomana'' Dall, 1918 |display_parents= 3 }}

'''''Provanna''''' is a genus of sea snails, marine gastropod mollusks in the family Provannidae.<ref name="WoRMS">{{WRMS species|391510|''Provanna'' Dall, 1918||4 May 2010}}</ref>

The species was named after Dall's first wife.

This is a very old genus with species already existing in Cretaceous seep deposits off Japan (93 - 100 million years ago). The Caribbean and the Pacific fauna were isolated about 3 million years ago by the closure of the Central American Isthmus.

==Description== The apical whorls of the protoconch are lacking through decollation. The opening is then sealed with a calcareous plug. The sculpture of the ovate fusiform shell shows scattered sigmoidal axial ribs that are crossed by spiral cords. The whorls are broad.

==Habitat== They are common in hydrothermal vents, hydrocarbon cold seeps and (more rarely) on deep-water food-falls, depending on the species. Most species feed on filamentous bacteria, while others feed on detritus. ==Species== [[File:Provanna alexi.png|thumb|''Provanna alexi'']] Species within the genus ''Provanna'' include:

* ''Provanna abyssalis'' Okutani & Fujikura, 2002<ref>{{WRMS species|395595|''Provanna abyssalis'' Okutani & Fujikura, 2002||4 May 2010}}</ref> * ''Provanna admetoides'' Warén & Ponder, 1991<ref>{{WRMS species|419518|''Provanna admetoides'' Warén & Ponder, 1991||4 May 2010}}</ref> * † ''Provanna alexi'' Amano & Little, 2014 * † ''Provanna antiqua'' Squires, 1995 * † ''Provanna azurini'' Kiel, Aguilar & Kase, 2020 * ''Provanna beebei'' Linse, Nye, Copley & C. Chen, 2019 * ''Provanna buccinoides'' Warén & Bouchet, 1993<ref>{{WRMS species|450001|''Provanna buccinoides'' Warén & Bouchet, 1993||4 May 2010}}</ref> * ''Provanna chevalieri'' Warén & Bouchet, 2009<ref>{{WRMS species|458599|''Provanna chevalieri'' Warén & Bouchet, 2009||4 May 2010}}</ref> * ''Provanna cingulata'' C. Chen, Watanabe & Ohara, 2018 * ''Provanna clathrata'' Sasaki, Ogura, Watanabe & Fujikura, 2016 * ''Provanna cooki'' Linse, Nye, Copley & C. Chen, 2019 * ''Provanna fenestrata'' C. Chen, Watanabe & Sasaki, 2019 * † ''Provanna fortis'' Hybertsen & Kiel, 2018 * ''Provanna glabra'' Okutani, Tsuchida & Fujikura, 1992<ref>{{WRMS species|450002|''Provanna glabra'' Okutani, Tsuchida & Fujikura, 1992||4 May 2010}}</ref> * ''Provanna goniata'' Warén & Bouchet, 1986<ref>{{WRMS species|450003|''Provanna goniata'' Warén & Bouchet, 1986||4 May 2010}}</ref> * † ''Provanna hirokoae'' Amano & Little, 2014 * ''Provanna ios'' Warén & Bouchet, 1986<ref>{{WRMS species|450004|''Provanna ios'' Warén & Bouchet, 1986||4 May 2010}}</ref> * ''Provanna kuroshimensis'' Sasaki, Ogura, Watanabe & Fujikura, 2016 * ''Provanna laevis'' Warén & Ponder, 1991<ref>{{WRMS species|450005|''Provanna laevis'' Warén & Ponder, 1991||4 May 2010}}</ref> * ''Provanna lomana'' (Dall, 1918)<ref>{{WRMS species|450006|''Provanna lomana'' (Dall, 1918)||4 May 2010}}</ref> * ''Provanna lucida'' Sasaki, Ogura, Watanabe & Fujikura, 2016 * ''Provanna macleani'' Warén & Bouchet, 1989<ref>{{WRMS species|450007|''Provanna macleani'' Warén & Bouchet, 1989||4 May 2010}}</ref> * † ''Provanna marshalli'' Saether, Little & K. A. Campbell, 2010 * ''Provanna muricata'' Warén & Bouchet, 1986<ref>{{WRMS species|450008|''Provanna muricata'' Warén & Bouchet, 1986||4 May 2010}}</ref> * † ''Provanna nakagawaensis'' Kaim, Jenkins & Hikida, 2009 * ''Provanna nassariaeformis'' Okutani, 1990<ref>{{WRMS species|450009|''Provanna nassariaeformis'' Okutani, 1990||4 May 2010}}</ref> * ''Provanna pacifica'' (Dall, 1908)<ref>{{WRMS species|450010|''Provanna pacifica'' (Dall, 1908)||4 May 2010}}</ref> * † ''Provanna pelada'' Kiel, Hybertsen, Hyžný & Klompmaker, 2019 * ''Provanna reticulata'' Warén & Bouchet, 2009<ref>{{WRMS species|458600|''Provanna reticulata'' Warén & Bouchet, 2009||4 May 2010}}</ref> * ''Provanna sculpta'' Warén & Ponder, 1991<ref>{{WRMS species|419519|''Provanna sculpta'' Warén & Ponder, 1991||4 May 2010}}</ref> * ''Provanna segonzaci'' Warén & Ponder, 1991<ref>{{WRMS species|450011|''Provanna segonzaci'' Warén & Ponder, 1991||4 May 2010}}</ref> * ''Provanna shinkaiae'' Okutani & Fujikura, 2002<ref>{{WRMS species|395596|''Provanna shinkaiae'' Okutani & Fujikura, 2002||4 May 2010}}</ref> * ''Provanna stephanos'' C. Chen, Watanabe & Sasaki, 2019 * ''Provanna subglabra'' Sasaki, Ogura, Watanabe & Fujikura, 2016 *† ''Provanna tappuensis'' Kaim, Jenkins & Warén, 2008 *† ''Provanna urahoroensis'' Amano & Jenkins, 2013 * ''Provanna variabilis'' Warén & Bouchet, 1986<ref>{{WRMS species|450012|''Provanna variabilis'' Warén & Bouchet, 1986||4 May 2010}}</ref>

Several fossil species have been described, predominantly identified from hydrocarbon seep deposits (Saether et al., 2010), including: * ''Provanna antiqua'' Squires & Goedert, 1995 <ref>Steffen Kiel, New Records and Species of Molluscs from Tertiary Cold-Seep Carbonates in Washington State, USA; Journal of Paleontology, Vol. 80, No. 1 (Jan., 2006), pp. 121-137</ref> * ''Provanna marshalli'' Saether, Little & Campbell, 2010 * ''Provanna nakagawaensis'' Kaim, Jenkins & Hikida, 2009 * ''Provanna tappuensis'' Kaim, Jenkins & Warén, 2008

There also are several fossil species known, but not formally described and named, from Central America, Japan, and possibly the Philippines (see Saether et al., 2010). ;Species brought into synonymy: * ''Provanna marianensis'' Okutani & Fujikura, 1990: synonym of ''Desbruyeresia marianensis'' (Okutani & Fujikura, 1990)

==References== {{Reflist}} * Healy, J. M. 1990. ''Taxonomic affinities of the deep-sea genus Provanna: new evidence from sperm structure''; J. Molluscan Stud. 56: 119-122 * Warén, A. & Bouchet, P. (1993). New records, species, genera, and a new family of gastropods from hydrothermal vents and hydrocarbon seeps. Zoologica Scripta. 22: 1-90. * Spencer, H.G., Marshall, B.A. & Willan, R.C. 2009 ''Recent Mollusca''. pp 196–219 in: Gordon, D.P. (Ed.), ''The New Zealand inventory of biodiversity. 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia''. Canterbury University Press, Christchurch * Saether, K.P., Little, C.T.S. & Campbell, K.A. (2010) ''A new fossil provannid gastropod from Miocene hydrocarbon seep deposits, East Coast Basin, North Island, New Zealand.'' ''Acta Palaeontologica Polonica'' 55, 507–517.

==External links== {{Commons category|Provanna}} * [https://biodiversitylibrary.org/page/3332127 Dall, W. H. (1918). ''Description of new species of shells, chiefly from Magdalena Bay, Lower California.'' Proceedings of the Biological Society of Washington. 31: 5-8] * [https://doi.org/10.18941/venus.74.1-2_1 Sasaki T., Ogura T., Watanabe H.K. & Fujikura K. (2016). Four new species of Provanna (Gastropoda: Provannidae) from vents and a seep off Nansei-shoto area, southwestern Japan. Venus. 74 (1-2): 1-17]

Category:Provanna Category:Provannidae Category:Taxa named by William Healey Dall

Provanna

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