Chambers, Martin 2000. The Upper Jurassic Kimmeridge Clay. Hull Geological Society [1]Archived 2008-09-25 at the Wayback Machine
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Chambers, Martin 2000. The Upper Jurassic Kimmeridge Clay. Hull Geological Society [1]Archived 2008-09-25 at the Wayback Machine
Wignall, Paul B. 1990. Benthic palaeoecology of the late Jurassic Kimmeridge Clay of England. Special Papers in Palaeontology, The Palaeontological Association, London. 43. ISBN978-0-901702-42-5[2]Archived 2011-08-26 at the Wayback Machine
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Wignall, Paul B. 1990. Benthic palaeoecology of the late Jurassic Kimmeridge Clay of England. Special Papers in Palaeontology, The Palaeontological Association, London. 43. ISBN978-0-901702-42-5[2]Archived 2011-08-26 at the Wayback Machine