A review of nonmarine turtles from the Late Cretaceous of Alberta, Donald B. Brinkman , Can. J. Earth Sci./Rev. can. sci. Terre 40(4): 557-571 (2003)
The turtles of the Purbeck Limestone Group of Dorset, southern England , Andrew R. Milner, Palaeontology, Volume 47, Number 6, November 2004, pp. 1441-1467(27)
A Mass-Accumulation of Vertebrates from the Lower Cretaceous of Nehden (Sauerland), West Germany D. B. Norman , Proceedings of the Royal Society of London. Series B, Biological Sciences, Vol. 230, No. 1259 (Mar. 23, 1987), pp. 215-255
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