Chronology
(in millions of years ago)

<1
plants appear in nervous systems

50
the cerebral cortex expands

100
grass

200
flowers
islands of Sporangia form

300
fruit, seeds

400
forests rise via wood and leaves
nervous systems come ashore

500
land plants emerge (moss)
roots, stems, spores
the first eyes

1000
acid rain mixes with eroded rock to create soil
nerves form

2000
cells combine into greater complexity (algae)

>2000
photosynthesis begins in tidal pools