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Adventive
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G3 (Globally rare/local)
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G4
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G4G5
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G5
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Garrett only
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GH (No known extant occurrences)
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Reviewable (MD/DCRC)
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S1 (Highly state rare)
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S1B (Highly state rare breeder)
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S1S2 (Highly state rare)
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S1S2B (State rare breeder)
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S2 (State rare)
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S2B (State rare breeder)
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S2B (State rare breeder)
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S2S3 (State rare)
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S2S3B (State rare breeder)
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S3 (Watch list)
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S3B (State watchlist breeder)
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S3S4
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S3S4B (State watchlist breeder)
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S4SE
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SH (Historical)
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SHB (State historical breeder)
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SR (State rare)
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SXM (State extirpated migrant)
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Worcester only
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Photos
Common Name
Genus
Species
Records
Category
Family
Order
Class
Kingdom
1
Dark False Mussel
Mytilopsis
leucophaeata
29
False Mussels
Dreissenidae
Myida
Bivalvia
Animalia
2
Zebra Mussel
Dreissena
polymorpha
3
False Mussels
Dreissenidae
Myida
Bivalvia
Animalia
1
Gould's Shipworm
Bankia
gouldi
1
Shipworms
Teredinidae
Myida
Bivalvia
Animalia
