Occurrences by Geologic Period
Classification Summary
By Phylum
| Pteridophyta |
473
|
| Tracheophyta |
175
|
| Angiospermae |
119
|
| Spermatophyta |
85
|
| Gymnospermae |
67
|
| Equisetophyta |
40
|
| Peltaspermophyta |
21
|
| Lycopodiophyta |
19
|
| Aneurophytophyta |
1
|
By Class
| NO_CLASS_SPECIFIED |
386
|
| Polypodiopsida |
206
|
| Pteridopsida |
109
|
| Lycopsida |
45
|
| Pinopsida |
43
|
| Equisetopsida |
39
|
| Pteropsida |
32
|
| Gymnospermopsida |
30
|
| Lycopodiopsida |
19
|
| Peltaspermopsida |
18
|
| Cladoxylopsida |
12
|
| Dicotyledoneae |
7
|
| Magnoliopsida |
6
|
| Lyginopteridopsida |
3
|
| Rhyniopsida |
2
|
| Cordaitopsida |
2
|
| Calamitopsida |
1
|
| Archaeopteridopsida |
1
|