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Keywords from Image Description:
The Quarterly journal of the Geological Society of London . only takes cognizance of the mode of growth The straight edge of the aperture is irregularly rough but there are no teeth Loc Living Holborn Island Fossil Curdles Creek Mt Gam bier RiverMurray Cliffs and Aldinga Cellepora fossa Hasw var marsupiata nov Zoarium subglobular