1. Arkell, W.J. , 1933. The Jurassic System in Great Britain. Clarendon Press.
2. Beerling, D.J. & Berner, R.A. 2002. Biogeochemical constraints on the Triassic–Jurassic boundary carbon cycle event. Global Biogeochemical Cycles, 16(3), 10.1029/2001GB001637.
3. More than one event in the late Triassic mass extinction
4. Bloos, G. & Page, K.N. 2000. The basal Jurassic ammonite succession in the North-West European province—review and new results. In: Hall, R.L. & Smith, P.L. (eds) Advances in Jurassic Research 2000. TransTech, Zürich, 2000, 27–40.