Journal of Paleontology, Vol. 67, No. 2 (Mar., 1993), pp. 194-197 (4 pages) A new gastropod genus, Dutrochus, is established for members of the family Microdomatidae that are characterized by a ...
A CORRESPONDENT has raised the question as to whether there is any explanation for the fact that spiral shells of present-day marine gastropods wind in the opposite direction to similar shells found ...
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