Fossil Plants
From the first land colonisers to giant Carboniferous forests — plants transformed Earth's atmosphere and created the coal that powered the Industrial Revolution.
Overview
Land plants transformed the planet — building the first forests, driving oxygen and carbon cycles, and creating the vast coal deposits of the Carboniferous. This hub covers the major plant groups of the fossil record, from giant club moss trees and horsetails through seed ferns and conifers to the flowering plants that came to dominate the Cenozoic.
Quick Facts
Key Characteristics
- •Lepidodendron and Sigillaria — club moss trees up to 40 m tall with check-pattern bark
- •Calamites — horsetail relatives forming dense swamp thickets
- •Cordaites and early conifers — seed plants of drier ground
- •Angiosperms appear in the Early Cretaceous and rapidly diversified
- •Petrified wood records internal anatomy cell by cell
Fossil Record
Plants fossilise as compressions/impressions, permineralised wood ('petrified'), and coal balls preserving cellular detail. Celebrated floras include the Carboniferous Coal Measures and Mazon Creek (Illinois), the Rhynie Chert (Scotland, Devonian, silicified), and the Petrified Forest (Arizona, Triassic).
Global Distribution
Worldwide — plant fossils occur on every continent, with major Palaeozoic assemblages in North America, Europe and China.
Evolutionary & Scientific Importance
Plant fossils record the oxygenation of the atmosphere, the formation of coal and the world's first forests, the rise of flowers, and the palaeoclimate swings of the past — making them essential to reconstructing ancient environments.
Classification
Higher-level plant classification follows major lineages above; relationships among early land plants remain under active study.