I have recently been exploring what is know as the Jurassic coast portion of North Yorshire UK. After finding ammonites in abundance I stumbled upon what appeared to be a vertabrae looking piece of rock. Parts that are exposed like the ends of the rock appear slightly porus like fossilized marrow. Waves often erode the sides of the cliffs exposing new fossils in this area. I was wondering if anyone could help me identify if this is actually a fossil and if so what sort of prehistoric beast it could have come from and if it is not thanks for your advice and hopefully better luck next time!