| 词条 | Epioblasma arcaeformis |
| 释义 |
| image = Naturalis Biodiversity Center - RMNH.MOL.327100 - Epioblasma arcaeformis (Lea, 1831) - Unionidae - Mollusc shell.jpeg | status = EX | status_system = IUCN2.3 | status_ref = [1] | genus = Epioblasma | species = arcaeformis | authority = (I. Lea, 1831) | synonyms = Dysnomia arcaeformis I. Lea, 1831 }} Epioblasma arcaeformis, the sugarspoon or arc-form pearly mussel, was a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. No live individuals have been observed since the early 20th century and it is presumed to be extinct. This species was endemic to the drainages of the Cumberland River and the Tennessee River in the United States. Its natural habitat was rocky shoals of medium to large size rivers. Like most other members of its genus, it became extinct due to habitat loss from pollution, impoundment construction, and canalization. The Holston River, Tennessee contained the last known population, which was killed by the construction of Cherokee Dam in 1941.[2] References1. ^IUCN Redlist 2. ^{{cite web |url=http://naturepreserves.ky.gov/pubs/publications/HaagCicerello_2016_KYmusselAtlas-pp%201-151.pdf |title=A Distributional Atlas of Kentucky Mussels |last=Haag |first=Wendell |last2=Cicerello |first2=Ron |date=2016 |website= |publisher=Kentucky State Nature Preserves Commission |access-date=May 19, 2017}} External links
4 : Extinct bivalves|Epioblasma|Bivalves described in 1831|Taxonomy articles created by Polbot |
| 随便看 |
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。