Sentences with phrase «preserved brains and eyes»

Found along the coast of north Greenland, the 518 - million - year - old fossils contained enough preserved brains and eyes to help researchers write a brand - new history of the arthropod nervous system.

Not exact matches

Several specimens of the species, Fuxianhuia protensa (left), contain dark areas within their eye stalks (see fossil, above right; gray areas in sketch, bottom right) that represent preserved clusters of neural tissue, including clumps along the optic nerve (labeled 1 through 3 in the sketch) and the brain (lowermost mass).

The evolution of vision in vertebrates is an important theme in the history of animal life, however, aside from the calcified lenses of fossilised arthropods, other parts of the visual system are not usually preserved in the fossil record because the soft tissue of the eye and brain decays rapidly days after death.