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Plant evolution. Proterozoic – Green algal evolution Mid paleozoic – First land plants Late paleozoic – Coal forests: early vascular plants Latest paleozoic – seed plants, early Gymnosperms Mesozoic – Gymnosperms (and reptiles) dominant Late mesozoic – first flowering plants

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Plant evolution


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plant evolution
Plant evolution
  • Proterozoic – Green algal evolution
  • Mid paleozoic – First land plants
  • Late paleozoic – Coal forests: early vascular plants
  • Latest paleozoic – seed plants, early Gymnosperms
  • Mesozoic – Gymnosperms (and reptiles) dominant
  • Late mesozoic – first flowering plants
  • Cenozoic – coevolution of flowering plants and insect pollinators
slide2

Ancestral Green

Algae

Gymnosperms

Bryophytes

Ferns & allies

Angiosperms

Flowers

Seeds

Overview of Plant Evolution

Vascular tissue

Embryos

bryophyte like plants evolved from charophycean green algae
Bryophyte-like plants evolved from Charophycean Green Algae

Chara

A Coleochaete B Parka (Ordovician)

From Berkeley Time Machine

Coleochaete

seedless vascular plants
Seedless Vascular Plants
  • Vascular tissue improves sporophyte efficiency
  • Dominant plants from late Devonian through early Permian
    • Equatorial coal forests
first seed plants
Pregymnosperms

Early Permean

Pangea – dry, continental climates

First seed plants
seed fern seeds
Seed fern seeds

Trigonocarpus from Mazon Creek formation (Carboniferous)

evolution of flower fruit
Evolution of flower & fruit
  • First fossils: late Jurassic period of Mesozoic era
  • Diversified during Cenozoic era
  • Coevolution with pollinators