Template:Shumway1935 table1
From Embryology
| Embryology in the classic period | ||
| 4th century B.C. | Aristotle | |
| Embryology in the Renaissance period | ||
| (Before the general use of the microscope) | ||
| 1651 | Harvey | Epigenesis |
| (After the general use of the microscope) | ||
| 1672 | Malpighi | Preformation |
| 1768 | Wolff | Epigenesis |
| Embryology in modern times | ||
| 1839 | von Baer | Comparative embryology |
| 1839 | (Schleiden and Schwann announced cell theory) | |
| 1859 | (Darwin announced theory of natural selection) | |
| 1866 | Haeckel | Biogenetic law |
| 1866 | (Mendel announced laws of inheritance) | |
| (Microscopic technique being developed) | ||
| 1874 | His | Experimental embryology |
| 1878 | Whitman | Cell lineage |
| 1883 | Roux | Mechanics of development |
| 1891 | Weismann | Theory of the germplasm |
| 1899 | Loeb | Artificial parthenogenesis |
| 1900 | (Rediscovery of Mendel’s laws) | |
