Hi, here is a palynomorph type from a peatland in central China (31 N, ~ 2000 m). I asked around but it still cannot be identified. It would be really nice if anyone can help.

1. It is a small object, around 30 micron.

2. It has a sculpture that looks like Plantago but there is no aperture.

3. It usually crumples. If we could unfold it, a Cyperaceae pollen shape would likely fit.

4. Most interestingly, in our pollen diagram, its percentage abruptly increases, in an opposite way to Cyperaceae pollen, but the terrestrial pollen taxa show no obvious changes. At the same time, the organic matter content of peat greatly increases. With this, I guess something has happened in the local vegetation. I hope this is a clue that can help identify this object (please see the figures).

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