Slide showing drawings of 'Skull of rhynchocephalian Sphenodon'. Slide shows drawings of the ''Skull of rhynchocephalian Sphenodon'; image consists of five individual drawings illustrating different views of skull, parts are labelled but not explained. Label below image reads 'Fig 139 - the skull of the living rhynchocephalian Sphenodon. For abbreviations see Fig 86'. Signed 'L.P' Late 19th - early 20th century