JAPANS MIRACULOUS STONE

“Japan’s miraculous stone” – this is the translation of the name given to this most peculiar of all ammonites by the Japanese scientist Yabe in 1904. Winding in U-shaped arcs and constantly changing direction, it forms a tangle-like structure. It is still unclear what advantage this shape of shell gave the animal. However, it is certain that this ammonite must have fed primarily on plankton – the clumsy fellow certainly could not have been a fast predator.