The fanshell (Cyprogenia stegaria), of the phylum Mollusca, was listed as an endangered species in 1990.
Fanshell
![](https://bunny-wp-pullzone-5vqgtgkbhi.b-cdn.net/wp-content/uploads/2023/02/m-3325.jpg)
Courtesy of Illinois State Museum, Photograph by Robert Warren
![](https://bunny-wp-pullzone-5vqgtgkbhi.b-cdn.net/wp-content/uploads/2023/02/m-3325.jpg)
The fanshell (Cyprogenia stegaria), of the phylum Mollusca, was listed as an endangered species in 1990.