Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
plant class
|
| gptkbp:characteristic |
woody stems
produced seeds fern-like fronds |
| gptkbp:commonName |
seed ferns
|
| gptkbp:compatibleWith |
true ferns
|
| gptkbp:discoveredBy |
paleobotanists
|
| gptkbp:division |
gptkb:Pteridospermatophyta
|
| gptkbp:extinct |
true
|
| gptkbp:firstAppearance |
gptkb:Devonian_period
|
| gptkbp:fossil |
widespread in Paleozoic and Mesozoic eras
|
| https://www.w3.org/2000/01/rdf-schema#label |
Pteridospermatopsida
|
| gptkbp:importantFor |
early seed plant evolution
|
| gptkbp:kingdom |
gptkb:Plantae
|
| gptkbp:lastAppearance |
gptkb:Cretaceous_period
|
| gptkbp:notableGenus |
gptkb:Callistophyton
gptkb:Lyginopteris gptkb:Medullosa |
| gptkbp:relatedTo |
gptkb:gymnosperms
|
| gptkbp:reproduction |
seeds, not spores
|
| gptkbp:bfsParent |
gptkb:Glossopteridales
|
| gptkbp:bfsLayer |
7
|