| Ferrissia dalli B.Walker, 1920
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Walker, B. (1920). Ancylus obscurus Haldeman and species referred to it. The Nautilus, 33(3): 99–103. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=350091 | 
                
                
                
                
            
                
                    | Ancylus hemisphaericus B.Walker, 1908
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Walker, B. (1908). New species of Ancylidae. The Nautilus, 21(12): 138–140. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=289980 | 
                
                
                
                
            
                
                    | Laevapex peninsulae (Pilsbry, 1903)
                        synoniem |  | 
                
                
                
                
            
                
                    | Ancylus kirklandi B.Walker, 1903
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Walker, B. (1903). Notes on eastern American Ancyli. The Nautilus, 17(3): 25–31, pls. 1–2. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349928 | 
                
                
                
                
            
                
                    | Ancylus peninsulae Pilsbry & C.W.Johnson, 1896
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Pilsbry, H. A. (1896). New American Ancylidae. The Nautilus, 9(12): 137–139. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349814 | 
                
                
                
                
            
                
                    | Ancylus fuscus var. eugraptus Pilsbry, 1896
                        synoniem |  | 
                
                
                
                
            
                
                    | Ancylus eugraptus Pilsbry, 1896
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Pilsbry, H. A. (1896). New American Ancylidae. The Nautilus, 9(12): 137–139. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349814 | 
                
                
                
                
            
                
                    | Ferrissia obscura (Haldeman, 1844)
                        synoniem |  | 
                
                
                
                
            
                
                    | Ancylus obscurus Haldeman, 1844
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Haldeman, S. S. (1844). Ancylus. A monograph of the freshwater univalve Mollusca of the United States, including notices of species in other parts of North America. 7. J. Dobson, Philadelphia. 1–14, plate 1. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349438 | 
                
                
                
                
            
                
                    | Laevapex diaphanus (Haldeman, 1841)
                        synoniem |  | 
                
                
                
                
            
                
                    | Ancylus diaphanus Haldeman, 1841
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Haldeman, S. S. (1841). A monograph of the Limniades or freshwater univalve shells of North America, 3. Philadelphia: J. Dobson. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349413 | 
                
                
                
                
            
                
                    | Ancylus fuscus C.B.Adams, 1840
                        synoniem |  | 
                
                    
                        | Gepubliceerd in:Adams, C. B. (1840). Descriptions of thirteen new species of shells of New England. Journal of the Boston Society of Natural History, 3: 318–332, pl. 3. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=134773 |