Plate, 'Three vertebrae sawn through in a longitudinal direction to shew the intervertebral cavities which are filled with blue lias' by W [William] Clift Watercolour painting of three vertebrae of the fossilised animal that have been sawn through, exposing intervertebral cavities filled with blue lias, a type of limestone found in southwest England. Subject: Palaeontology Published in Philosophical Transactions as 'Some account of the fossil remains of an animal more nearly allied to fishes than any of the other classes of animals'. Read 23 June 1814. [1814]