Abstract

Ferns are important plants both to ecosystems and humans, while the organic tissues of ferns might be hard to find due to the taphonomical condition. Thus, phytoliths in ferns might provide helpful information while other proxies were absent. In this study, we surveyed the production and morphology of phytoliths in 25 fern species belonging to 15 families. The results showed that more than half of the studied species were non-phytoliths producers, while in phytoliths producers, the production rate could reach 712,995 grains/g of dry material. We confirmed and found that Irregular anticlinal, Prismatic elongate, Elongate sinuate, Spheroidal cavate granulate, Silicified epidermis granulate, Amoeboid branchiate and Prismatic cubic might be the potential diagnostic phytoliths types for ferns.

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