// Workers AI · dad joke modeWhat did the mainstream river snail say? Shell-abrate.

Mainstream river snail
Conservation status
	; Vulnerable (IUCN 2.3)
	; Secure (NatureServe)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	incertae sedis
Family:	Pleuroceridae
Genus:	Leptoxis
Species:	L. praerosa
Binomial name
	Leptoxis praerosa; (Say, 1821)
Synonyms
	List Anculosa cincinnatiensis (Lea, 1838) ; Anculosa gibbosa Lea, 1841 ; Anculosa harpethensis Pilsbry, 1896 ; Anculosa littorina Haldeman, 1840 ; Anculosa praerosa (Say, 1821) ; Anculosa subglobosa (Say, 1825) ; Anculosa tintinabulum Goodrich, 1940 ; Anculosa tintinnabulum Lea, 1845 ; Anculosa tryoni Lewis, 1871 ; Anculotus angulatus Conrad, 1834 ; Anculotus praemorsa Woodward, 1856 ; Leptoxis retusa Haldeman, 1848 ; Melania angulosa Menke, 1828 ; Melania cincinnatiensis Lea, 1838 ; Melania cruentata Menke, 1828 ; Melania globula Lea, 1841 ; Melania ovularis Menke, 1828 ; Melania pilula Lea, 1841 ; Melania praerosa Say, 1821 ; Melanopsis neritiformis Deshayes, 1832;

The mainstream river snail, also known as the onyx rocksnail, scientific name Leptoxis praerosa, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.^[4]

References

↑ Bogan, A.E. (1996). "Leptoxis praerosa". IUCN Red List of Threatened Species. 1996 e.T11769A3304448. doi:10.2305/IUCN.UK.1996.RLTS.T11769A3304448.en. Retrieved 17 November 2021.
↑ NatureServe. "Leptoxis praerosa". NatureServe Explorer. Arlington, Virginia. Retrieved 27 March 2026.
↑ Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Leptoxis praerosa (Say, 1821)". MolluscaBase. World Register of Marine Species. Retrieved 1 April 2026.
↑ "Mainstream River Snail Facts - Photos - Earth's Endangered Creatures". www.earthsendangered.com. Retrieved 20 July 2026.

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