Fossil Bryophytes
The odds of any living material becoming fossilized are extremely rare, especially if that living thing is a moss, liverwort, or hornwort. It does happen and In Defense of Plants podcast talks with Alex Bippus, who at the time was a PhD student at Oregon State, to learn about his fascinating work studying fossilized bryophytes. From climate change to evolution, there seems to be no end to the fun of studying bryophyte fossils and what they can tell us.
https://www.indefenseofplants.com/podcast/2023/1/8/ep-403-fossil-bryophytes-revisited