Cambridgeshire has some excellent Jurassic sites, with historically the most famous area around Peterborough. Here, the Oxford Clay has yielded several complete skeletons of marine reptiles over the years. In fact, reptile bones are very common, as are crinoids and ammonites. However, most of the old quarries in Peterborough are sadly now being swamped by the massive town expansion programme, but there are still two you can still visit.
Most of the old clay pits have been swallowed up by the building of huge housing estates to the south of Peterborough. However, one area at Yaxley has been left as a nature area, with public byways taking you around the rim of the pits, which are now filled with water. On the banks, the Oxford Clay is rich in fossils. Jurassic, Lake Embankment, Rating: ♦♦♦♦♦
Famous for its high number of reptile remains, this location has been the site of some complete skeletons in the past, but also yields fish remains, ammonites, belemnites, bivalves, brachiopods and crinoids. There is also a ‘fossil hunting area’ in the disused part of the pit, which the general public can collect from and which is regularly replenished from spoil from the main pit. Jurassic, Working Quarry, Rating: ♦♦
This is a small disused quarry with a nature trail through the middle of it. There are heaps of oolitic spoil everywhere, which contain bivalves (in particular, oysters) and brachiopods. If you are lucky, ammonites can also be found, although they are uncommon. Jurassic, Disused Quarry, Rating: ♦♦
Grafham Water was formally a shallow valley, now turned into a large lake, with water sports and a nature reserve. Today, plentiful fossils can be found along the banks of the lake and, during summer months when the water level is at its lowest, ammonites, belemnites and much, much more can be collected. Jurassic, Reservoir, Rating: ♦♦