10
PALAEONTOLOGY ,
IV. REVIEW OF THE NUMERICAL PROPORTION
1
i
i. Carboniferous Period.
ii. Trias Period.
a
b
C
d
e
/
9
^ Together.
h
Jc
l
Together.
i. Plantee .
Number of genera
0
0
21
2
121
15
17
176
0
15
4
26
45
Number of species .
0
0
55
2
879
52
29
1017
0
31
5
62
98
Proportion . . .
= 1 :
0
0
2-62
1-00
7-24
3-46
1-70
5-78
0
2-06
1-25
2-38
2-18
ii. Phytozoa.
Number of genera
20
88
68
59
1
1
6
243
24
1
12
2
39
Number of species
36
223
228
263
1
1
17
769
128
1
19
2
150
Proportion . .
= 1 :
1-80
2-54
335
4-46
1-00
1-00
2-83
3-12
5-33
100
1-56
1-00
3-85
hi. Malacozoa
Number of genera
44
62
94
90
35
4
33
362
63
20
44
14
141
Number of species
260
416
979
809
143
7
94
2708
603
38
109
26
776
Proportion . .
= 1 :
5-91
671
10-4
8-99
4-09
175
2-85
7-48
9-58
1-90
2-48
1-86
5-50
iv. Entomozoa
Number of genera
37
41
31
21
10
0
2
142
1
3
5
1
10
Number of species
218
264
94
43
18
0
4
641
6
3
12
1
22
Proportion . .
= 1 :
5-90
6-44
3-03
2-05
1-80
0
2-00
4-51
6-00
1-00
2-40
1-00
2-20
v. Spondylozoa
Number of genera
0
5
47
21
37
4
19
133
3
10
19
20
52
Number of species
0
7
110
65
80
7
49
328
4
12
50
77
143
Proportion . .
= 1 :
0
1-40
2-34
3-10
2-17
4-25
2-58
2-47
1-33
1-20
2-63
3-85
2-75
Number of genera .
101
196
240
191
83
9
60
880
91
34
80
37
242
Number of species .
514
910
1311
1180
242
24
164
4445
741
54
190
106
1091
Proportion . . .
= 1 :
5-09
4-64
5-88
6T8
2-92
2-66
2-73
5’05
8-14
1-59
2'38
2-87
4-51
tabilia .
Number of genera .
101
196
261
193
204
24
77
1056
91
34
80
63
287
Number of species .
514
910
1466
1182
1121
76
193
5462
741
85
195
168
1189
Proportion . . .
= 1 :
5-07
4-65
5-26
6-12
5-50
3-17
2-51
5-18
814
2-50
2-44
2-67
4-14
Proportion of separateClasses of Animals.Amorphozoa . . . = 1 :
1-00
1-51
1-80
»
1-64
7-33
1
1
1
Polypi.
= 1 :
2-23
3-08
3-04
4-00
2-67
2-50
1
Echinodermata . .
= 1 :
1'00
1-97
4-55
5-58
1
1
12-2
2-00
1
Bracliiopoda . . .
= 1 :
13-7
11-4
10-1
16-6
5-00
7-17
1-00
3-33
2-00
Pelecypoda . . .
= 1 :
5-00
3-83
8-20
513
5-38
1-75
2-44
5-37
2-30
3-09
1-43
Gasteropoda . . .
= 1 :
2-11
4-32
8-20
8-00
1-46
2-00
13-6
2-00
2-00
2-80
Cephalopoda . . .
= 1 :
5-00
10-4
30'0
15-2
10-0
1-00
14-3
1-00
4-50
Crustacea . . . .
= 1 :
6-30
7-35
3-18
2-31
2'00
1-50
1-00
2-67
Pisces . , . . .
= 1 :
1-40
2-34
3-10
2-13
(11-0)
2-80
1-33
1-66
3-08
5-80
Reptilia . . . .
= 1 :
1-00
2-00
1-75
1-00
1-86
2-00
Mammalia . . .
1-00
PALAEONTOLOGY
11
in. Oolite Period.
i\. Cretaceous Period.
All the v. Periods.
m
n
0
P
^ Together.
Q
r
/
Together.
s
t
U
V
w
X
^ Together.
Sura
a-x
of
I.-V.
True
sum.
30
54
1
12
97
0
32
5
37
8
30
115
53
31
0
237
592
463
350
71
152
2
16
241
0
77
7
84
10
136
319
110
48
0
623
2055
2-37
2-82
2-00
1-33
2-48
0
2-41
1-40
2-33
1-25
4-53
2-77
2-07
1-55
0
2-63
3-47
4-44
5-87
14
122
8
2
144
63
83
184
310
13
115
134
115
117
53
547
1283
811
524
29
579
16
2
626
149
270
1162
1581
35
383
476
502
412
278
2086
4895
2-07
4-74
2-00
1-00
4-34
2-36
3-25
6-31
5-10
2-69
3-33
3-55
4-36
3’52
5-05
8-14
3-81
6-04
9-34
78
132
66
27
303
116
101
146
363
25
199
218
93
209
146
890
2059
865
473
533
1455
242
102
2332
751
566
1500
2817
39
2125
2725
783
1609
642
7281
13885
6-83
11-0
3-66
3-78
7-70
6-47
5-60
10-2
7-75
1-56
10-7
12-5
8-45
7-70
4-40
8-18
6-74
161
29-3
32
88
2
41
173
16
8
24
42
3
21
134
431
19
6
614
981
783
686
50
256
7
69
382
35
28
114
177
11
85
251
1381
91
9
1828
2885
1-57
2-91
3-50
1-68
2-21
3-50
3-50
4-75
4-21
3-67
4-05
1-87
3’20
4-79
1-50
2-98
2-96
3-68
4-20
41
83
22
23
169
4
44
63
111
1
178
117
151
29
152
627
1092
801
731
172
278
42
60
552
10
70
161
231
2
367
279
311
110
488
1557
2701
4-20
3-35
1-91
2-61
3-27
2-50
1-59
2-55
2-08
2-00
2-06
2-40
2-06
3-79
3-21
3-27
2-47
3-37
3-70
165
425
98
91
789
193
236
417
826
41
513
603
790
374
357
2678
5415
3260
2414
784
2568
307
233
3892
945
934
2937
4816
87
2960
3721
2977
2222
1417
13384
24366
4-75
6-04
3-14
2-56
4-02
4-90
3-95
7'04
11-3
2-12
5-77
6-17
3-77
5-94
3-97
5-00
4-50
7-47
10-1
195
479
99
103
886
193
268
422
863
49
543
718
843
405
357
2915
6007
3723
2704
855
2720
309
249
4133
945
1011
2944
4900
97
3096
4040
3087
2270
1417
14007
26421
4-38
5-68
312
2-42
4-66
4-90
3-77
6-98
5-68
1-98
5’65
5-63
3-66
5-60
3-69
4-80
4-40
7-00
959
1
1-80
3-00
4-17
7-83
1-33
1-20
4-70
3'00
7-50
4-35
6-50
11-0
3-25
1-80
1-93
2-67
6-73
i
3-41
3-55
2-08
4-51
1-31
3-24
5-78
10-1
2-60
6-27
2-33
2-65
3-72
5-56
1-86
3-64
4-88
1-80
3-39
4-00
8-26
11-5
15-4
8-00
16-0
1-50
7'62
8-67
17-4
1-00
4-33
3-00
7-67
( 4 - 00 )
9-88
22-0
39-5
4-71
10-6
4-02
5-92
5-51
5-26
10-2
1-92
9'16
9-21
4-00
6-54
3-50
5-34
13-3
27-7
4-50
7-90
3-31
1-71
4-36
4'03
7-98
1-33
12-0
16-3
4-27
8-86
4-99
7'61
16-9
30-2
19-5
21-6
2-60
151
11-5
14-6
, ,
1-00
6-00
2-00
4-00
12-1
25-4
32-2
2
3-38
1-00
4-00
2-28
2-00
3-31
2-12
2-71
100
5 T 5
1-50
3-32
4-90
5-36
3-94
4-27
2-45
4-78
333
1-83
2-87
2-11
2-57
1-74
3-18
( 5 - 00 )
4-82
6-56
7-61
5*86
1-83
1-36
1-21
( 1-00
1 - 00 )
1-00
2-75
2-95
3-37
2-00
2-40
2-17
3-02
3-31
1-00
1-50
**
1-90
2-00
1-89
6-50
3-32
2-65
3-69
375