[To face p. 44. 







V. Tertiary Period. 



All the V. Periods. 



-f 



S 



t 



u 



V 



w 



X 



s-x 



Si 

 of 



a-x 



ini 

 of 

 I-V. 



True 



sum. 



I. PLANTS. 

 Number of genera 



37 



84 

 •33 



8 



10 

 1-25 



30 

 136 

 4-53 



115 



319 

 2-77 



53 

 110 

 2-07 



31 



48 

 1-55 





 

 



237 

 623 

 2-63 



592 

 3'47 



463 

 4-44 



350 

 2055 



5-87 



Number of species 



Proportion — 1 : 





II. PHYTOZOA. 



Number of genera 



Number of species 



Proportion = 1 : 



HO 



>81 

 ■10 



13 



35 



2-69 



115 

 383 

 3-33 



134 

 476 

 3-55 



115 



502 

 4-36 



117 

 412 

 3-52 



53 



278 

 5-05 



547 



2086 

 8-14 



1283 

 3'81 



2059 

 6-74 



811 

 604 



524 

 4895 

 9-34 



III. MALACOZOA. 



Number of genera 



Number of species 



Proportion ~ 1 • 



63 



117 

 75 



25 



39 



1-56 



199 

 2125 

 10-7 



218 

 2725 

 12-5 



93 



783 

 8-45 



209 

 1609 

 7-70 



146 

 642 

 4-40 



890 

 7281 



8-18 



865 

 16-"i 



473 

 13885 

 29-3 





IV. ENTOMOZOA. 

 Number of genera 



42 



77 

 21 



3 



11 



3-67 



21 



85 



4-05 



134 

 251 



1-87 



431 

 1381 

 3-20 



19 

 91 



4-79 



6 



9 



1-50 



614 



1828 

 2-98 



981 

 2-96 



783 

 3-68 



686 

 2885 

 4-20 



Number of species 



Proportion — 1 • 





V. SPONDYLOZOA. 

 Number of genera 



11 

 31 



08 



1 



2 



2-00 



178 

 367 

 2-06 



117 

 279 

 2-40 



151 

 311 

 2-06 



29 



110 



3-79 



152 



488 

 3-21 



627 

 1557 

 3-27 



1092 

 2-47 



801 

 3"37 



731 

 2701 

 3-70 



Number of species 



Proportion = 1 : 



VI. ANIMALIA. 

 Number of genera 



26 

 16 

 •3 



41 



87 



2-12 



513 

 2960 

 5-77 



603 

 3721 

 6-17 



790 

 2977 

 3-77 



374 

 2222 

 5-94 



357 

 1417 

 3-97 



2678 



13384 



5-00 



5415 



4-'50 



3260 

 7*47 



2414 



24366 



10-1 



Number of species 



Proportion — 1 : 





VII. ANIMALIA et 



VEGETABILIA. 



Number of genera 



63 

 00 

 68 



49 



97 



1-98 



543 

 3096 

 5-65 



718 

 4040 

 5-63 



843 

 3087 

 3-66 



405 

 2270 

 5-60 



357 

 1417 

 3-69 



2915 

 14007 



4-80 



6007 

 4-40 



3723 



7-6o 



2764 



26421 



959 



Number of species 



Proportion = 1 : 





Proportion of separate 

 Classes of Animals. 



Amorphozoa = 1 : 



Polypi = 1 : 



Echinodermata ... = 1 : 



Brachiopoda = 1 : 



Pelecypoda = 1 : 



Gasteropoda = 1 : 



Cephalopoda = 1 : 



Crustacea = 1 .- 



Pisces =1 1 : 



Reptilia = 1 : 



Mammalia = 1 : 



• • 



> • 



"*1 

 1-86 

 1-00 

 1-92 

 1-33 

 1-00 



1-33 

 3-41 

 3-64 

 4-33 

 9-16 

 12-0 

 6-00 

 2-12 

 2-11 

 2-75 

 1-90 



1-20 

 3-55 

 4-88 

 3-00 

 9-21 

 16-3 

 2-00 

 2-71 

 2-57 

 2-95 

 2-00 



4-70 

 2-08 

 1-80 



i'OO 

 4-27 



l-OO 

 1-74 

 3-37 

 1-89 



3-00 

 4-51 

 3-39 

 7-67 

 6-54 

 8-86 

 4-00 

 5-15 

 3-18 

 2-00 

 6-50 



7-50 

 1-31 

 4-00 



(4-00) 

 3-50 

 4-99 



1-50 



(5-00) 

 2-40 

 3-32 



• 





4-35 

 3-24 

 8-26 

 9-88 

 5-34 

 7-61 

 12-1 

 3-32 

 4-82 

 2-17 

 2-65 



6-50 

 5-78 

 11-5 

 220 

 13-3 

 16-9 

 25-4 

 4-90 

 6-56 

 3-02 

 3-69 



11-0 

 10-1 

 15-4 

 39-5 

 27-7 

 30-2 

 32-2 

 5-36 

 7-61 

 3-31 

 3-75 





























