Species of Greatest Conservation Need By Taxon

Mollusc

Scientific Name Common Name RSGCN Concern Level
Pleurobema rubrum Pyramid Pigtoe
Elysia catulus A Nudibranch
Elysia chlorotica Eastern Emerald Elysia
Ensis directus Atlantic Jackknife Clam
Eubranchus exiguus Dwarf Balloon Aeolis
Eubranchus pallidus Painted Balloon Worm
Quadrula verrucosa Pistolgrip
Quadrula quadrula Mapleleaf
Quadrula pustulosa Pimpleback
Parvaspina collina James Spinymussel
Pleurobema cordatum Ohio Pigtoe
Toxolasma parvum Lilliput
Strophitus undulatus Creeper
Cratena pilata Striped Nudibranch
Pleurobema sintoxia Round Pigtoe
Pleuronaia dolabelloides Slabside Pearlymussel
Potamilus alatus Pink Heelsplitter
Potamilus ohiensis Pink Papershell
Ptychobranchus fasciolaris Kidneyshell
Ptychobranchus subtentum Fluted Kidneyshell
Pyganodon cataracta Eastern Floater
Pyganodon grandis Giant Floater
Quadrula cylindrica cylindrica Rabbitsfoot
Triodopsis juxtidens robinae Brush Creek Threetooth
Amphinaias nodulata Wartyback
Quadrula metanevra Monkeyface
Mya arenaria Soft Shell Clam
Arctica islandica Ocean/Black Quahog
Ptychatractus ligatus Spindle Shell
Toxolasma lividum Purple Liliput
Spisula solida Atlantic Surg Clam
Barnea truncata Atlantic Mud Piddock
Tergipes tergipes A Nudibranch
Alderia modesta Modest Alderia
Geukensia demissa Ribbed Mussel
Laevicardium mortoni Morton's Eggcockle
Limacina helicina Limancina Snail
Mercenaria mercenaria Northern Quahog
Modiolus modiolus Northern Horse Mussel
Pisidium equilaterale Round Peaclam
Mytilus edulis Blue Mussell
Petricolaria pholadiformis False Angelwing
Boreotrophon clathratus Clathrate Trophon
Boreotrophon truncatus Murex
Bulimnea megastoma Mammoth Lymnaea
Busycon carica Knobbed Whelk
Busycotypus canaliculatum Channeled Whelk
Zirfaea crispata Atlantic Great Piddock
Mya truncata Gaper Clam
Chlamys islandica Icelandic Scallop