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Dinosaur statistics completed (update + most prolific years)
Good day!
Finally, I've completed my dinosaur genera per era table (thx to HP Mortimer's
additional info), and added the table of most prolific years (in number of
dinosaur genera description) since 1824. As the year 2004 has not yet passed,
this may not be conclusive value.
Number of non avian dinosaur genera per each era:
Age number lenght number per Ma
Late Triassic:
Carnian 24 11.5 2.1
Norian 28 12.9 2.2
Rhaetian 10 4.0 2.5
Early Jurassic:
Hettangian 18 3.1 5.8
Sinemurian 23 6.9 3.3
Pliensbach 20 6.6 3.0
Toarcian 13 7.4 1.8
Middle Jurassic:
Aalenian 7 4.0 1.7
Bajocian 9 3.9 2.3
Bathonian 23 3.0 7.7
Callowian 28 3.5 8.0
Late Jurassic:
Oxfordian 24 6.2 3.9
Kimmeridgian 59 4.2 14.0
Tithonian 42 5.3 7.9
Early Cretaceous:
Berriasian 15 5.3 2.8
Valanginian 32 3.8 8.4
Hauterivian 35 6.4 5.5
Barremian 59 5.0 11.8
Aptian 58 13.0 4.5
Albian 67 12.4 5.4
Late Cretaceous:
Cenomanian 44 6.1 7.2
Turonian 33 4.2 7.9
Coniacian 18 3.8 4.7
Santonian 31 2.0 15.5
Campanian 130 12.9 10.1
Maastrichtian 112 5.1 22.0
(Still 7(6) genera without era assignment, incl. Chuanjiesaurus, Genyodectes,
Shanxia and Tianzhenosaurus).
The most prolofic years in dinosaur genera descriptions:
1.) 2003 - 30
2.) 1998 - 26
3.) 2001 - 25
4.) 1999 - 24
5.) 2000 - 19
6.) 1996 - 18
7.) 1991 - 16
2004 - 16 (so far)
9.) 1994 - 15
10.) 1979 - 13
11.) 1995 - 12
2002 - 12
13.) 1993 - 11
14.) 1877 - 9
1914 - 9
1973 - 9
1983 - 9
1990 - 9
19.) 1977 - 8
1980 - 8
1984 - 8
1985 - 8
23.) 1924 - 7
1933 - 7
1981 - 7
26.) 1932 - 6
1970 - 6
1974 - 6
1986 - 6
1989 - 6
1997 - 6
32.) 1972 - 5
1978 - 5
1987 - 5
1988 - 5
1992 - 5
37.) 1869 - 4
1903 - 4
1922 - 4
1923 - 4
1929 - 4
1975 - 4
1976 - 4
1982 - 4
45.) 1885 - 3
1889 - 3
1890 - 3
1902 - 3
1905 - 3
1913 - 3
1915 - 3
1928 - 3
1954 - 3
1964 - 3
55.) 1854 - 2
1859 - 2
1876 - 2
1891 - 2
1893 - 2
1908 - 2
1910 - 2
1911 - 2
1916 - 2
1925 - 2
1927 - 2
1936 - 2
1937 - 2
1942 - 2
1948 - 2
1950 - 2
1957 - 2
1960 - 2
1969 - 2
1971 - 2
75.) 1824 - 1
1825 - 1
1833 - 1
1836 - 1
1837 - 1
1838 - 1
1841 - 1
1848 - 1
1850 - 1
1856 - 1
1857 - 1
1861 - 1
1865 - 1
1866 - 1
1867 - 1
1870 - 1
1875 - 1
1878 - 1
1879 - 1
1881 - 1
1883 - 1
1884 - 1
1888 - 1
1894 - 1
1901 - 1
1904 - 1
1909 - 1
1912 - 1
1917 - 1
1919 - 1
1920 - 1
1921 - 1
1926 - 1
1931 - 1
1934 - 1
1939 - 1
1940 - 1
1941 - 1
1943 - 1
1947 - 1
1951 - 1
1952 - 1
1953 - 1
1955 - 1
1956 - 1
1958 - 1
1959 - 1
1962 - 1
1963 - 1
1965 - 1
1966 - 1
1967 - 1
1968 - 1
127 years with at least a single descripttion from a total of 180 from the
first description of Megalosaurus in 1824. The succes of the last few years is
outstanding, in the last decade (1994-2004), there's 203 genera, which is
almost 37 % of all known genera in 180 years. In the first half (1824-1914)
there was just 88 descriptions (16 %), the second half (1915-2004) makes 463
genera (84 %). If we divide the 180 years to thirds, the first 60 year period
makes just 41 genera (7.4 %), the second period 108 genera (19.6 %) and the
last one (1945-2004) 402 genera (73 %). In the 21st Century, there's an average
of 20.75 genera per year (83 in total), and the current year is not over. The
pinnacle was last year, when the number of new genera descriptions hit 30.
Dinosaur paleontology is at its top nowadays, hopefully this trend willnot end
in the next years. Vlad
"Despite what we had been led to believe, the T. rex was not a scavenger at
all. We clocked one at 50 kilometres an hour." John Parker Hammond, 1997
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