Park Database Species List for Order Basommatophora
Sampled from All Watersheds

Genus	Species	Subspecies	Author	Common Name	Last Sampled	Last Collectors	Where for All Dates?
Ancylidae_genus *	species **	-		(NA)	2000-07-31	I & M Aquatics Crew	Here
Carychium	clappi	-	Hubricht 1959	Thorn snail	2006-07-29	DDourson, JDourson & KQParticipants 06	Here
Carychium	exiguum	-	(Say, 1822)	Thorn snail	2006-07-29	DDourson, JDourson & KQParticipants 06	Here
Carychium	exile	exile	H C Lea 1842	Ice thorn	2009-06-29	DDourson & JDourson	Here
Carychium	exile	-		Ice thorn	2006-07-28	DDourson & JDourson	Here
Carychium	mexicanum	-	Pilsbry, 1891	Thorn snail	2006-07-28	DDourson & JDourson	Here
Carychium	nannodes	-	Clapp 1905	File thorn snail	2006-07-28	DDourson & JDourson	Here
Carychium	species **	-	O. F. Müller, 1773	(NA)	2010-07-23	DDourson, MGumbert & ADourson	Here
Ferrissia	fragilis	-		Freshwater limpet	2011-09-10	RDillon	Here
Ferrissia	rivularis	-		Freshwater limpet	2011-09-11	RDillon	Here
Ferrissia	species **	-		(NA)	2011-06-12	DAEtnier	Here
Gyraulus	parvus	-	(Say, 1817)	Ash gyro snail	2011-09-10	RDillon	Here
Gyraulus	species **	-		(NA)	2002-07-11	I & M Aquatics Crew	Here
Helisoma	anceps	-	(Menke, 1830)	Two-ridge rams-horn snail	2011-09-10	RDillon	Here
Laevapex	fuscus	-		Freshwater limpet	2011-07-01	BNichols & LKobelt	Here
Laevapex	species **	-		(NA)	2003-10-07	I & M Aquatics Crew	Here
Lymnaea	columella	-	Say 1817	Freshwater snail	2011-09-10	RDillon	Here
Lymnaea	humilis	-		Freshwater snail	2011-09-10	RDillon	Here
Lymnaeidae_genus *	species **	-		(NA)	1994-06-14	DAEtnier	Here
Menetus	dilatatus	-		Bugle sprite	2011-09-10	RDillon	Here
Menutus	dilatatus	-	(Gould, 1841)	Rams horn snail	1995-09-15	SJFraley & DAEtnier	Here
Physa	acuta	-		Freshwater bladder snail	2011-09-10	RDillon	Here
Physa	gyrina	-		Freshwater bladder snail	2011-09-10	RDillon	Here
Physella	gyrina	-		Freshwater bladder snail	1995-09-15	SJFraley & DAEtnier	Here
Physella	heterostropha	-		Freshwater bladder snail	1995-09-15	SJFraley & DAEtnier	Here
Physella	species **	-		(NA)	2009-07-28	BNichols, CKozmik & LCarnal	Here
Stagnicola	species **	-		(NA)	1993-12-15	SJFraley & DAEtnier	Here
Total Number of Species = 16

*---(not identified to the genus level)
**---(not identified to the species level)