Incredible! A 1.9 metre long amphibian left several body impressions as it circled its shallow pond more than 250 million years ago. One of these impressions is shown in photo A, compared with a modern crocodile body impression, photo B.
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Sedimentary charcoal studies from southern Africa’s grassy biomes: a potential resource for informing the management of fires and ecosystems https://t.co/864rk7JWaA
@fynbospollen Whether darkly stained water coming from peats or fine colloidal silicates from clays, just repeat washing with water several times for shorter periods until clear. Don't speed up. If you are scared of losing pollen this way, check the supernatant.