Seed fern
several distinct polyphyletic groups of extinct seed-bearing plants / From Wikipedia, the free encyclopedia
The term seed ferns (Pteridospermatophyta) are several groups of extinct seed plants (spermatophytes).
Quick Facts Pteridospermatophyta Late Devonian – End Cretaceous 376–66 mya, Scientific classification ...
Pteridospermatophyta
Late Devonian – End Cretaceous 376–66 mya | |
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Fossil seed fern leaves from the Pennsylvanian Carboniferous of northeastern Ohio. | |
Scientific classification | |
Kingdom: | |
Division: | Pteridospermatophyta |
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The oldest fossil evidence of plants of this type is from Upper Devonian strata.[1] They flourished during the Carboniferous and Permian periods.
Pteridosperms declined during the Mesozoic Era and had mostly disappeared by the end of the Cretaceous. Some fossil pteridosperm-like plants seem to have survived into Eocene times in Tasmania.[2]