Here is a wonderful specimen of a fossil brittlestar. This is Protaster sp. from the Rochester Shale of New York. Brittlestars are quite uncommon in the fossil record due to the delicate nature of the thin arms. Not only is this a rare fossil, it is also an extremely attractive specimen. The central disk of the brittlestar is prominently exhibited and the five thin arms are splayed out to create a beautiful display. The plate structure of this unusual echinoderm is clearly defined. The fossil has good color and contrast and is almost perfectly centered on the squared plate of shale. This is a great example of a rare fossil brittlestar from the Silurian of New York.