Amber from the Hukawng Valley in Myanmar has provided a rare insight into the evolution of parasitism in nematodes, or roundworms. Scientists have discovered a 100-million-year-old fossilized nematode inside a piece of amber, which shows how its head is modified for parasitism. This is the first time that a fossilized nematode has been found with such features, and the findings suggest that parasitism in nematodes evolved much earlier than previously thought. The discovery offers a unique window into the evolution of these worms and their ability to feed off other organisms for their survival.

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source: Phys.org