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Maryland Checklist - Genus: Sphaerium - all-time (Total: 5)
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Show All
Adventive
\n
Coastal Plain only
\n
Endangered (Federal)
\n
Endangered (MD)
\n
Excluded
\n
Exotic
\n
Extinct
\n
Extirpated
\n
Extralimital
\n
G1 (Highly globally rare)
\n
G1G2 (Highly globally rare)
\n
G2 (Globally rare)
\n
G2G3 (Globally rare)
\n
G3 (Globally rare/local)
\n
G3G4 (Globally vulnerable)
\n
G4
\n
G4G5
\n
G5
\n
Garrett only
\n
GH (No known extant occurrences)
\n
GU (Global status uncertain)
\n
Hybrid
\n
In need of conservation
\n
Invasive
\n
Nativity Uncertain
\n
Non-native
\n
Reviewable (MD/DCRC)
\n
S1 (Highly state rare)
\n
S1B (Highly state rare breeder)
\n
S1M (State rare migrant)
\n
S1N (State rare non-breeder)
\n
S1S2 (Highly state rare)
\n
S1S2B (State rare breeder)
\n
S2 (State rare)
\n
S2B (State rare breeder)
\n
S2B (State rare breeder)
\n
S2S3 (State rare)
\n
S2S3B (State rare breeder)
\n
S3 (Watch list)
\n
S3B (State watchlist breeder)
\n
S3S4
\n
S3S4B (State watchlist breeder)
\n
S4SE
\n
SH (Historical)
\n
SHB (State historical breeder)
\n
SR (State rare)
\n
Status Uncertain
\n
SUB (Status uncertain breeder)
\n
SXB (State extirpated breeder)
\n
SXM (State extirpated migrant)
\n
Threatened (Federal)
\n
Threatened (MD)
\n
Undescribed
\n
Vulnerable
\n
Waif
\n
Western MD only
\n
Worcester only
\n
Photos
Common Name
Genus
Species
Records
Category
Family
Order
Class
Kingdom
1
River Fingernailclam
Sphaerium
fabale
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
2
Grooved Fingernailclam
Sphaerium
simile
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
3
Herrington Fingernailclam
Sphaerium
occidnetale
0
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
4
Striated Fingernailclam
Sphaerium
striatinum
1
Freshwater Bivalves
Pisidiidae
Veneroida
Bivalvia
Animalia
1
Herrington Fingernailclam
Sphaerium
occidentale
1
Pea Clams
Sphaeriidae
Sphaeriida
Bivalvia
Animalia
