Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
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Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
SPECTACLECASE: Difference between revisions
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[[Image:Spectaclecase.jpg|left|thumb|250px|]]SPECTACLECASE. | [[Image:Spectaclecase.jpg|left|thumb|250px|]]SPECTACLECASE. The surface of spectaclecase shells is smooth to somewhat rough. It is brown in young shells and becomes dark brown to black with age. The mussel grows to a length up to 8 inches (20.3 cm). | ||
The spectaclecase mussel lives in large rivers with swiftly flowing water. Favorite sites are among boulders in patches of sand, cobble, or in gravel where the current is reduced. | The spectaclecase mussel lives in large rivers with swiftly flowing water. Favorite sites are among boulders in patches of sand, cobble, or in gravel where the current is reduced. | ||
Although | Although it is widely distributed, the mussel is absent from many areas where it formerly occurred. It is considered endangered in Illinois, Iowa, and Wisconsin. | ||
[[Category: Mussels]] | |||
Latest revision as of 18:13, 21 December 2020
SPECTACLECASE. The surface of spectaclecase shells is smooth to somewhat rough. It is brown in young shells and becomes dark brown to black with age. The mussel grows to a length up to 8 inches (20.3 cm).
The spectaclecase mussel lives in large rivers with swiftly flowing water. Favorite sites are among boulders in patches of sand, cobble, or in gravel where the current is reduced.
Although it is widely distributed, the mussel is absent from many areas where it formerly occurred. It is considered endangered in Illinois, Iowa, and Wisconsin.