The development of Cell Theroy By Leah Smith Jan 1, 1674 Anton van Leewenhoek Anton discovered infusoria (protests in modern zoology classification) Jan 1, 1676 Anton van Leeuwenhoek Anton discovered bacteria (e.g. Large selenomonads from the human mouth) Jan 1, 1677 Anton van Leeuwenhoek Anton discovered spermatozoa. Jan 1, 1682 Anton van Leeuwenhoek Anton discovered the banded pattern of muscular fibres