Era
- 1868-1912 32 results
- 1874-1922 29 results
- 1882-1958 15 results
- Cenozoic 12 results
- 1872-1928 7 results
- Quaternary 7 results
- 1872-1912 6 results
- 1979 5 results
- 20th century 5 results
- Triassic 4 results
- 1885-1962 3 results
- 1917- 3 results
- Devonian 3 results
- Paleozoic 3 results
- Precambrian 3 results
- 1800-1862 2 results
- 1860-1924 2 results
- 1880-1912 2 results
- 1880-1951 2 results
- 1880-1963 2 results
- 1915- 2 results
- 1916- 2 results
- 1925- 2 results
- 1934- 2 results
- 1950- 2 results
- Cretaceous 2 results
- Permian 2 results
- Tertiary 2 results
- 1728-1779 1 results
- 1777-1856 1 results
- 1778-1842 1 results
- 1798-1877 1 results
- 1806-1873 1 results
- 1830-1916 1 results
- 1864-1943 1 results
- 1867-1921 1 results
- 1867-1936 1 results
- 1869-1928 1 results
- 1871-1958 1 results
- 1872-1943 1 results
- 1872-1956 1 results
- 1873-1934 1 results
- 1876-1918 1 results
- 1877-1938 1 results
- 1877-1958 1 results
- 1879-1916 1 results
- 1879-1932 1 results
- 1880-1956 1 results
- 1880-1957 1 results
- 1880-1961 1 results more…