| Archive Reference / Library Class No. | BMAG/JWJ/DERSB:66051.7 |
| Title | notes: Envelope used as a folder containing notes relating to Yeadonian Stage, Lower Gastroioceras Age (G1), draft, catalogues the fossils of the G. cancellatum and G. cumbriense zones. Plus off-print of 'On a new Species of Edestus from the Upper Carboniferous |
| Level | Item |
| Repository | Derbyshire Record Office |
| Full Catalogue List | Click here to view a full list for this collection |
| Archive Creator | Dr J. Wilfred Jackson (1880-1978), conchologist, archaeologist and geologist |