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Gymnosperms

> "Seed Ferns" | Ginkgoes | Cycads and Relatives | Conifers and Relatives | Gnetophytes | Other Gymnosperms

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(26 total)

Neuropteris
Neuropteris
© 2003 Spencer Lucas, New Mexico Museum of Natural History

Natural mold of a log
Natural mold of a log
© 2005 Greg McDonald

Callixylon
Callixylon
© 2001 Richard Schrantz

What are Gymnosperms? Gymnosperms were the earliest seed-producing, woody plants. The term gymnosperm means “naked seed,” and this group includes all the seed-producing plants except the angiosperms (flowering plants). Their seeds commonly appear in a cone and lack the protective covering present in the seeds of flowering plants. Gymnosperms dominated the forests and swamps throughout much of the Mesozoic. Many have gone extinct, but members of the ginkgoes, cycads, and conifers are still around today.

First known fossil occurrence: Devonian.

Last known fossil occurrence: Quaternary. This group has living relatives.

Cool Gymnosperms links:

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See Gymnosperms from the:

Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Precambrian
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