| Date Note | Earliest dated drawing for second batch, date of publication |
| Publication Note | Two of the studies appear in Dixon, F, 'Geology and Fossils of the Tertiary and Cretaceous Formations of Sussex', London (1850), p365, plate 32, figure 8; edited versions of these studies also appear in 'Memoirs of the Geological Survey...illustrative of British Organic Remains', Decade XIII'. London: Longmans & Co (1872), Plate 9, figs 3-5. |