Reconstructions of two of the ancient amphigastropods before the evolution of the spiralled shell. While the soft parts of these drawings are intelligent guesswork, we know that the snails had a head end and tail end and carried their shells like knapsacks on their backs.
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https://paperspast.natlib.govt.nz/periodicals/FORBI19960201.2.33.1.3
Bibliographic details
Forest and Bird, Issue 279, 1 February 1996, Page 42
Word Count
45Reconstructions of two of the ancient amphigastropods before the evolution of the spiralled shell. While the soft parts of these drawings are intelligent guesswork, we know that the snails had a head end and tail end and carried their shells like knapsacks on their backs. Forest and Bird, Issue 279, 1 February 1996, Page 42
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