Ichthyosaur - probably Steneosaurus sp.
Beautifully preserved complete 3D uncrushed Ichthyosaur vertebra in the centre of a nodule. The edge of a second vertebra lying next to it.
Jurassic, Upper Toarcian, Whitby Mudstone Formation.
Port Mulgrave, Yorkshire.
Vertebra : 3.5 cm diam.
