Theliderma stapes

Theliderma stapes, the stirrup shell or stirrupshell, is a species of bivalve in the family Unionidae. It is endemic to eastern Mississippi and western Alabama in the United States, though it is potentially extinct, as it was last observed in 1987.[1][2]

Theliderma stapes

Possibly Extinct  (NatureServe)[1]
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Theliderma
Species:
T. stapes
Binomial name
Theliderma stapes
(Lea, 1831)
Synonyms

Quadrula stapes (Lea, 1831)

Conservation

This species experienced a population collapse primarily due to river modification in the form of canal construction. In 1976, it was predicted that the construction of the Tennessee–Tombigbee Waterway would cause the extinction of this species. This prediction would quickly come to fruition after the waterway was completed in 1984. Freshly dead shells of this species were last observed in 1987 and further surveys have failed to find any evidence of a surviving population.[1][2]

In 2015, it was proposed to delist this species from the Endangered Species Act. This is done when further efforts to recover a species would almost certainly be futile, and there is no evidence of currently surviving individuals. This species is likely now extinct.[1][2]

gollark: 15. FAKE LOADING! WHY!13. Hardcoded cursor positions? Bad idea!29. You know you don't have to use `shell.run "some other program"` for everything, right?
gollark: Line by line review:"New OS Installer" https://pastebin.com/LqKwPb6N:1. blocking terminate for some reason3. why the global?6. weird way to declare a function8. why the global AGAIN? Also, why are you doing this synchronously?[not done]
gollark: If anyone else wants the thing, I'll send the link here.
gollark: Anyway, send me the code so I can observe it.
gollark: It is *not a good first project*, or, well, early project.

References
  1. Quadrula stapes. The Nature Conservancy.
  2. Stirrupshell (Quadrula stapes) 5-Year Review: Summary and Evaluation. U.S. Fish and Wildlife Service, September 2015


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