Helenodiscus vernoni (Smith, 1892:262)
Wollaston’s Saint Helena discus snail
Taxonomy & Nomenclature
Conservation Status
Extinct
IUCN RedList status: Extinct
Distribution
St. Helena
Biology & Ecology
Hypodigm
Media
References
Baillie, J. and Groombridge, B. (eds). 1996. 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.
Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.
Groombridge, B. (ed.). 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.
Mollusc Specialist Group. (1996a). Helenodiscus vernoni. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. (http://www.iucnredlist.org). Downloaded on 15 July 2013.
Mollusc Specialist Group. 1996b. Helenodiscus vernoni. The IUCN Red List of Threatened Species 1996: e.T9771A13014985. https://dx.doi.org/10.2305/IUCN.UK.1996.RLTS.T9771A13014985.en. Accessed on 30 June 2022.
Régnier, Claire, Fontaine, Benoît and Bouchet, Philippe. (2009). Not Knowing, Not Recording, Not Listing: Numerous Unnoticed Mollusk Extinctions. Conservation Biology 23(5): 1214-1221.
http://ia600202.us.archive.org/13/items/manualofconcholo28tryorich/manualofconcholo28tryorich.pdf