Early Triassic
Geologic Age
251.0–245.0 Ma
Subdivisions
Eon / Era / Period / Epoch
What happened during this time?
Glossopterids become conspicuous part of flora until end of Early Triassic
Cycads, conifers, modern ferns, ginkgophytes begin to diversify during Triassic
The large Lepidodendrid trees disappear from the landscape after the Permian
Representatives from the Lycopodiales. Selaginellales, and Isoetales survive, but are less prominent
Pleuromeiales, close relatives of the Lepidodendrids appear during the Triassic
Sphenophyllales disappear at the end of the Early Triassic, but horsetails (Equisetales) continue as riverside flora in many areas.
Many modern ferns (Filicalean) begin to appear in the Triassic, and will radiate during Jurassic
Additional Resources
Permian mass extinction linked to 10°C global temperature rise that reshaped Earth's ecosystems (Phys.org 11Mar2025)
└Ragon et al. (2025) Comparison between plant fossil assemblages and simulated biomes across the Permian-Triassic Boundary
Plants struggled for millions of years after the world's worst climate catastrophe (Phys.org 6Mar2025)
└Amores et al. (2025) Age-controlled south polar floral trends show a staggered Early Triassic gymnosperm recovery following the end-Permian event
After Earth's Worth Mass Extinction, Life Rebounded Rapidly, Fossils Suggest (NY Times 2/16/17)