| Description Of Item | Clipped printed diagram in a scrapbook from the collection of John Ritchie relating to a table of geological time. The timeline spans from 800 or 80 million years ago to 40 or 4 million years ago, and covers periods named: Azoic, Archaeozoic, Proterozic, Early Palaeozoic, Later Palaeozoic, Mesozoic, and Cainozoic. |