Fossils of the Oxford Clay was the fourth published guide by PalAss and covers the eponymous Jurassic Oxford Clay, which has been the major source of brick clay in the UK, notwithstanding the closures of clay pits in the Peterborough area over the years since this was published.

I have a soft spot for PalAss guides and have reviewed several in the past. As a collector myself, the amount of information about the relevant fossils is second to none, with black and white photos and descriptions of virtually everything the amateur or professional palaeontologist might need.