Forrest, R. and Oliver, N. 2003. Ichthyosaurs and plesiosaurs from the Lower Spilsby Sansdstone member (Upper Jurassic), north Lincolnshire. Proceedings of the Yorkshire Geological Society, 54, 269-275.
Forrest, R. and Oliver, N. 2003. Ichthyosaurs and plesiosaurs from the Lower Spilsby Sansdstone member (Upper Jurassic), north Lincolnshire. Proceedings of the Yorkshire Geological Society, 54, 269-275.