> “A 6-metre fungus would be odd enough in the modern world, but at least we are used to trees quite a bit bigger,” says [geophysicist Kevin] Boyce. “Plants at that time were a few feet tall, invertebrate animals were small, and there were no terrestrial vertebrates. This fossil would have been all the more striking in such a diminutive landscape.”

Throw in a turtle invasion and a time traveling plumber, and you've got yourself a movie.