List of U.S. state shells
Table

State
Shell
Image
Year designated
Alabama
Johnstone's junonia Scaphella junonia ssp. johnstoneae
-
1990
Connecticut
Eastern oyster Crassostrea virginica
-
1989
Florida
Horse conch Triplofusus papillosus
-
1969
Georgia
Knobbed whelk Busycon carica
-
1987
Massachusetts
Wrinkled whelk or New England Neptune Neptunea lyrata ssp. decemcostata
-
1987
Mississippi
Eastern oyster Crassostrea virginica
-
1974
New Jersey
Knobbed whelk Busycon carica
-
1995
New York
Bay scallop Argopecten irradians
-
1988
North Carolina
Scotch bonnet Semicassis granulata
-
1965
Oregon
Oregon hairy triton Fusitriton oregonensis
-
1989
Rhode Island
Northern quahog Mercenaria mercenaria
-
1987
South Carolina
Lettered olive Oliva sayana
-
1984
Texas
Lightning whelk or Prickly whelk Sinistrofulgur perversum ssp. pulleyi
Busycon perversum 01.JPG
1989
Virginia
Eastern oyster Crassostrea virginica
-
1974

Question: What is the state shell of New Jersey and Georgia?
Answer: Knobbed whelk is the state shell of New Jersey and Georgia.