Eastern Gulf Rivers Species List (Nov 2016) Scientific Name Common Name USFWS Status Alasmidonta triangulata southern elktoe petitioned Alasmidonta wrightiana (extinct) Ochlockonee arcmussel Amblema neislerii fat threeridge E 1998 Amblema plicata threeridge Anodonta hartfieldorum cypress floater Anodonta heardi Apalachicola floater petitioned Anodonta suborbiculata (introduced) flat floater Anodontoides radiatus rayed creekshell petitioned Elliptio ahenea southern lance Elliptio arctata delicate spike petitioned Elliptio chipolaensis Chipola slabshell T 1998 Elliptio crassidens elephantear Elliptio fraterna brother spike petitioned Elliptio fumata Gulf slabshell Elliptio jayensis flat spike Elliptio mcmichaeli fluted elephantear Elliptio occulta hidden spike Elliptio pullata Gulf spike Elliptio purpurella inflated spike petitioned Elliptoideus sloatianus purple bankclimber T 1998 Glebula rotundata round pearlshell Hamiota australis southern sandshell T 2012 Hamiota (=Lampsilis) subangulata shinyrayed pocketbook E 1998 Lampsilis binominata lined pocketbook Lampsilis floridensis Florida sandshell Lampsilis ornata southern pocketbook Lampsilis straminea southern fatmucket Lasmigona subviridis green floater Margaritifera marrianae Alabama pearlshell E 1998 Medionidus acutissimus Alabama moccasinshell T 1993 Medionidus penicillatus Gulf moccasinshell E 1998 Medionidus simpsonianus Ochlockonee moccasinshell E 1998 Medionidus walkeri Suwannee moccasinshell T 2016 Megalonaias nervosa washboard Obovaria haddletoni (presumed extinct) haddleton lampmussel Obovaria (=Villosa) choctawensis Choctaw bean E 2012 Plectomerus dombeyanus bankclimer Pleurobema pyriforme oval pigtoe E 1998 Pleurobema strodeanum fuzzy pigtoe T 2012 Ptychobranchus jonesi southern kidneyshell E 2012 Pyganodon cataracta (introduced) eastern floater Pyganodon grandis giant floater Quadrula infucata sculptured pigtoe Quadrula kleiniana Suwannee pigtoe Quadrula succissa purple pigtoe Reginaia apalachicola (extinct) Apalachicola ebonyshell Fusconaia burkei tapered pigtoe T 2012 Fusconaia escambia narrow pigtoe T 2012 Reginaia (=Fusconaia) rotulata round ebonyshell E 2012 Toxolasma parvum (introduced) lilliput Toxolasma paulum iridescent lilliput Toxolasma sp. Gulf lilliput Uniomerus carolinianus Florida pondhorn Uniomerus columbensis Apalachicola pondhorn Uniomerus tetralasmus pondhorn Utterbackia imbecillis paper pondshell Utterbackia peggyae Florida floater Utterbackia peninsularis peninsular floater Villosa lienosa little spectaclecase Villosa vibex southern rainbow Villosa villosa downy rainbow