Click on the thumbnails for larger images (~56K@).
|Mapleleafs, Quadrula quadrula, for comparison. A highly plastic species!|
|Fall River near Neodesha, Kansas.||Fall River near Neodesha, Kansas.||Reservoir in eastern Nebraska|
|Meramec River, Missouri||Meramec River, Missouri||The Bourbeuse River "winged" specimen|
|Other pictures of winged mapleleaf, and related links.|
Ohio River. Coker, R. E. 1919. Bull. U.S. Bur. Fish. 36.
|Verdigris River, KS (subfossil)||Neosho River, Kansas (subfossil)|
|Illinois Natural History Survey||U. S. Fish and Wildlife Service|
Range extension in the upper St. Croix- link to abstract by Mark Hove et al.
Federal Recovery Plan for winged mapleleaf (Adobe PDF file)
Historical presence in Kansas- link to abstract by Dan Bleam, Charles Cope, Karen Couch, and Don Distler
Rediscovery of lost species - discussion thread on Conch-L regarding Marian Havlik's discovery of the St. Croix population.