How may types of small cents are there and what years were they minted?

Flying Eagle  1857-1858
Indian Head  (Copper Nickel, Laurel Reverse)  1859
Indian Head (Copper Nickel, Oak Reverse)  1859
Indian Head  (Bronze)  1860-1864
Indian Head  1864-1909
Lincoln Head  (Wheat Reverse)   1909-1942, 1946-1958
Lincoln Head  (Zinc Plated Steel)  1943
Lincoln Head  (Shell Case Copper)  1944-1945
Lincoln Head  (Memorial Reverse)  1959 to date
Lincoln Head  (Copper Coated Zinc, Memorial Reverse)  1982-2008
Lincoln Head  (Shield Reverse)  2009 to date

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