SeedPlantsFossils213

SeedPlantsFossils213 - Seed-Dispersing Plants: Fossil...

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Seed-Dispersing Plants: Fossil Groups - 1 Progymnospermophyta – The Fossil Seed Plants Pteridospermales – Fossil Seed Ferns Cordaitales – Primitive Conifer-like Bennettitales – Fossil Cycadeoides Several groups have been reconstructed from fossil data Important as the probable progenitors of today's seed plants Often with fern-like fronds Produced seeds on modified leaves called sporophylls Pollen produced in a synagium (similar to the sporangium of a fern without an annulus) Seed Fern Reconstruction Fossil Seed Fern Cordaites branch (Primitive Conifer-like) Reconstruction of Weilandiella (Bennettiales) Reconstruction of Archeaopteris, a progymnosperm (Archeaopteris lacked seeds)
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Seed-Dispersing Plants: Fossil Groups - 2 The Living "Fossils" Several gymnosperms have excellent fossil records, including the revered Ginkgo biloba , sole survivor of the Ginkgophyta and the dawn redwood, Metasequoia glyptostroboides , of central China, a conifer in the Taxodiaceae, the family that
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SeedPlantsFossils213 - Seed-Dispersing Plants: Fossil...

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