At https://www.sciencealert.com/520-million-year-old-fossilized-larva-found-with-preserved-brain-and-guts … Firstly, it must have been buried very quickly. Secondly, this is a fossil of a sesame seed size baby worm. It was found in a rock in China. Presumably under a microscope. It dates as far back as the Cambrian period which on the uniformitarian geochronology timeline go0es back some 520 million years. It is in fact a new genus – now known as Youti yuanshi. The interesting thing is that this unlikely fossil was almost perfectly preserved with its internal anatomy intact. It is ancestral to modern spiders, crabs, and various insects.
Brain and Guts
3 August 2024Biology, Evolution, Geology, Palaeontology