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Northeast Fish and Wildlife Diversity
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Species of Greatest Conservation Need By Taxon
Mollusc
Scientific Name
RSGCN Concern
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Very High
High
Moderate
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Scientific Name
Common Name
RSGCN Concern Level
Lasmigona complanata
White Heelsplitter
Lasmigona compressa
Creek heelsplitter
Lasmigona costata
Fluted-shell
Lasmigona holstonia
Tennessee Heelsplitter
High
Lasmigona subviridis
Green Floater
Very High
Lemiox rimosus
Birdwing Pearlymussel
Very High
Leptodea fragilis
Fragile Papershell
Leptodea ochracea
Tidewater Mucket
High
Leptoxis dilatata
Seep Mudalia
Ligumia nasuta
Eastern Pondmussel
High
Ligumia recta
Black Sandshell
Limacina helicina
Limancina Snail
Limneria undata
Wavy Lamellaria
Lioplax subcarinata
Ridged Lioplax
Lithasia armigera
Armored Rocksnail
Littoridinops tenuipes
Coastal Marsh Snail
Lobosculum pustuloides
Tiny Liptooth
Lucilla singleyana
Smooth Coil
Lymnaea stagnalis
Great Pondsnail
Lyogyrus granum
Squat Duskysnail
Lyogyrus pupoideus
Pupa Duskysnail
Lyogyrus walkeri
Canadian Duskysnail
Margaritifera margaritifera
Eastern Pearlshell
Moderate
Margaritifera monodonta
Spectaclecase
Very High
Marstonia lustrica
Boreal Marstonia
Medionidus conradicus
Cumberland Moccasinshell
Megalonaias nervosa
Washboard
Megapallifera mutabilis
Changeable Mantleslug
Megapallifera wetherbyi
Blotchy Mantleslug
Moderate
Melampus bidentatus
Marsh Snail
Mercenaria mercenaria
Northern Quahog
Mesodon andrewsae
Balsam Globe
Mesodon clausus
Yellow Globelet Snail
Mesodon elevatus
Proud Globe
Mesodon mitchellianus
Sealed Globelet
Mesodon normalis
Grand Globe
Mesodon zaletus
Toothed Globe
Mesomphix capnodes
Dusky Button
Mesomphix luisant
Glossy Button
Mesomphix perlaevis
Smooth Button
Mesomphix rugeli
Wrinkled Button
Mesomphix sp. 1
A Button
Mesomphix subplanus
Flat Button
Millerelix plicata
Cumberland Liptooth
Modiolus modiolus
Northern Horse Mussel
Mya arenaria
Soft Shell Clam
Mya truncata
Gaper Clam
Mytilus edulis
Blue Mussell
Neohelix dentifera
Big-tooth Whitelip
Nesovitrea binneyana
Blue Glass Snail
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