1988- 21
21st century 9
Eocene 9
Paleocene 6
20th century 5
2001- 4
1936-2021 3
1947- 3
1957-2011 3
1997- 3
19th century 3
Permian 3
1876-1948 2
1953-2007 2
1971-1988 2
Dhofar War, 1964-1976 2
Mesozoic 2
Soviet occupation, 1979-1989 2
Tertiary 2
-1880 1
-1900 1
1856-1920 1
1857-1919 1
1866-1955 1
1873-1933 1
1874-1922 1
1919-1947 1
1928-1979 1
1941-2010 1
1945- 1
1947-1971 1
1947-1984 1
1952- 1
1955- 1
1960- 1
1973-1989 1
1975- 1
1975-1979 1
1977- 1
2017-2021 1
British occupation, 1765-1947 1
Cretaceous 1
Partition, 1947 1