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Taxonomy
Asaphus (Ampyx) was named by Dalman (1827). Its type is Asaphus (Ampyx) nasutus.
It was reranked as Ampyx by Warburg (1925), Harrington and Leanza (1957), Neuman (1964), Fortey (1975), Jell and Adrain (2002), Sepkoski (2002).
It was assigned to Asaphus by Dalman (1827); to Raphiophorinae by Fortey (1975); to Asaphida by Sepkoski (2002); and to Raphiophoridae by Warburg (1925), Harrington and Leanza (1957), Neuman (1964), Jell and Adrain (2002).
It was reranked as Ampyx by Warburg (1925), Harrington and Leanza (1957), Neuman (1964), Fortey (1975), Jell and Adrain (2002), Sepkoski (2002).
It was assigned to Asaphus by Dalman (1827); to Raphiophorinae by Fortey (1975); to Asaphida by Sepkoski (2002); and to Raphiophoridae by Warburg (1925), Harrington and Leanza (1957), Neuman (1964), Jell and Adrain (2002).
Species lacking formal opinion data