Category:Species described in the 20th century

• Species described in 1901 (6 C, 3 P)
• Species described in 1902 (5 C, 2 P)
• Species described in 1903 (6 C)
• Species described in 1904 (5 C, 4 P)
• Species described in 1905 (5 C, 5 P)
• Species described in 1906 (5 C, 1 P)
• Species described in 1907 (6 C, 6 P)
• Species described in 1908 (5 C, 4 P)
• Species described in 1909 (6 C)
• Species described in 1910 (5 C, 2 P)
• Species described in 1911 (5 C, 4 P)
• Species described in 1912 (5 C, 5 P)
• Species described in 1913 (5 C)
• Species described in 1914 (5 C, 2 P)
• Species described in 1915 (5 C)
• Species described in 1916 (5 C)
• Species described in 1917 (5 C)
• Species described in 1918 (5 C)
• Species described in 1919 (4 C, 1 P)
• Species described in 1920 (5 C, 2 P)
• Species described in 1921 (5 C)
• Species described in 1922 (5 C)
• Species described in 1923 (5 C)
• Species described in 1924 (5 C, 2 P)
• Species described in 1925 (5 C, 4 P)
• Species described in 1926 (5 C, 1 P)
• Species described in 1927 (5 C, 6 P)
• Species described in 1928 (5 C)
• Species described in 1929 (5 C)
• Species described in 1930 (6 C, 12 P)
• Species described in 1931 (6 C, 3 P)
• Species described in 1932 (5 C, 1 P)
• Species described in 1933 (6 C, 1 P)
• Species described in 1934 (6 C, 2 P)
• Species described in 1935 (5 C)
• Species described in 1936 (4 C, 1 P)
• Species described in 1937 (5 C, 2 P)
• Species described in 1938 (5 C, 2 P)
• Species described in 1939 (5 C, 2 P)
• Species described in 1940 (6 C, 2 P)
• Species described in 1941 (5 C)
• Species described in 1942 (5 C)
• Species described in 1943 (4 C, 4 P)
• Species described in 1944 (5 C, 2 P)
• Species described in 1945 (4 C, 2 P)
• Species described in 1946 (4 C, 1 P)
• Species described in 1947 (4 C, 1 P)
• Species described in 1948 (4 C, 4 P)
• Species described in 1949 (5 C)
• Species described in 1950 (4 C, 1 P)
• Species described in 1951 (5 C, 1 P)
• Species described in 1952 (5 C, 1 P)
• Species described in 1953 (6 C)
• Species described in 1954 (5 C)
• Species described in 1955 (4 C)
• Species described in 1956 (5 C, 1 P)
• Species described in 1957 (5 C, 4 P)
• Species described in 1958 (6 C, 2 P)
• Species described in 1959 (5 C, 1 P)
• Species described in 1960 (5 C)
• Species described in 1961 (5 C)
• Species described in 1962 (4 C, 1 P)
• Species described in 1963 (5 C, 2 P)
• Species described in 1964 (4 C, 2 P)
• Species described in 1965 (5 C)
• Species described in 1966 (5 C, 1 P)
• Species described in 1967 (6 C)
• Species described in 1968 (5 C, 3 P)
• Species described in 1969 (5 C, 2 P)
• Species described in 1970 (6 C)
• Species described in 1971 (5 C, 1 P)
• Species described in 1972 (7 C, 1 P)
• Species described in 1973 (6 C, 2 P)
• Species described in 1974 (6 C)
• Species described in 1975 (6 C)
• Species described in 1976 (5 C, 6 P)
• Species described in 1977 (6 C)
• Species described in 1978 (5 C, 5 P)
• Species described in 1979 (5 C, 1 P)
• Species described in 1980 (7 C)
• Species described in 1981 (6 C)
• Species described in 1982 (6 C, 3 P)
• Species described in 1983 (7 C)
• Species described in 1984 (6 C, 1 P)
• Species described in 1985 (5 C, 4 P)
• Species described in 1986 (6 C, 4 P)
• Species described in 1987 (5 C, 2 P)
• Species described in 1988 (6 C, 5 P)
• Species described in 1989 (6 C, 5 P)
• Species described in 1990 (6 C, 1 P)
• Species described in 1991 (5 C, 2 P)
• Species described in 1992 (6 C, 2 P)
• Species described in 1993 (6 C, 4 P)
• Species described in 1994 (6 C)
• Species described in 1995 (6 C, 1 P)
• Species described in 1996 (6 C, 1 P)
• Species described in 1997 (6 C)
• Species described in 1998 (6 C, 2 P)
• Species described in 1999 (6 C)
• Species described in 2000 (6 C, 2 P)

A

• Animals described in the 20th century (112 C)
• Archaea described in the 20th century (25 C)

B

• Bacteria described in the 20th century (100 C)

F

• Fungi described in the 20th century (101 C, 1 P)

P

• Plants described in the 20th century (100 C)
• Protists described in the 20th century (82 C)

V

• Viruses described in the 20th century (22 C)