Occurrences by Geologic Period
Classification Summary
By Phylum
| Pteridophyta |
368
|
| Pteridospermophyta |
105
|
| Tracheophyta |
92
|
| Psilophytophyta |
64
|
| Spermatophyta |
59
|
| Angiospermae |
58
|
| Lycophyta |
53
|
| Sphenophyta |
52
|
| Gymnospermae |
43
|
| Ginkgophyta |
30
|
| Coniferophyta |
21
|
| Equisetophyta |
16
|
| Bryophyta |
15
|
| Lycopodiophyta |
7
|
| Cycadophyta |
6
|
| Peltaspermophyta |
5
|
| Embryophyta |
2
|
| Charophyta |
2
|
| NO_PHYLUM_SPECIFIED |
1
|
| Zosterophyllophyta |
1
|
By Class
| NO_CLASS_SPECIFIED |
425
|
| Polypodiopsida |
132
|
| Pteridopsida |
102
|
| Sphenopsida |
52
|
| Lycopsida |
45
|
| Psilophytopsida |
41
|
| Ginkgoopsida |
30
|
| Gymnospermopsida |
30
|
| Pinopsida |
28
|
| Pteropsida |
23
|
| Equisetopsida |
15
|
| Cladoxylopsida |
12
|
| Lycopodiopsida |
7
|
| Cycadopsida |
6
|
| Dicotyledoneae |
5
|
| Magnoliopsida |
4
|
| Lyginopteridopsida |
3
|
| Peltaspermopsida |
2
|
| Rhyniopsida |
1
|
| Cordaitopsida |
1
|
| Calamitopsida |
1
|