Orthoceras, a lovely piece. Orthoceras, it was a straight mollusc and an ancestor of our modern-day squid. Pieces are cleaned so that the white fossil is revealed and the black stone has been polished to highlight the fossil. Actual weight, 2.5kg. Postage & stand included for UK mainland customers. Age: 350 million. Size: Approx. 25 x 21cm. Location: Morocco, North Africa