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Happy #FossilFriday #FernFriday from
@ucmpberkeley! Today we highlight one of Earth's former Carboniferous swamp giants, a Sigillaria from Iowa. The stem's "rabbit-track" leaf scars and ribbed surface are dead giveaways for identifying this extinct lycopod genus.
Up, up and....er gone: A great paper by @batkesp @SETarvin. Nowhere to escape – Diversity and community composition of ferns and lycophytes on the highest mountain in Honduras