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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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