P. W.  Skelton and Benton, M. J., ?Mollusca: Rostroconchia, Scaphopoda and Bivalvia?, in The fossil record 2, M. J.  Benton, Ed. London: Chapman & Hall, 1993, pp. 237-263.

P. W.  Skelton and Benton, M. J., ?Mollusca: Rostroconchia, Scaphopoda and Bivalvia?, in The fossil record 2, M. J.  Benton, Ed. London: Chapman & Hall, 1993, pp. 237-263.