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Keywords from Image Description:
Haeckel Thalamophora . See mpizkoeln mpg de html here for an index to numbers Lagena formosa Schwager Schwager Schwager Brady Brady Millett Brady Brady Brady d'Orbigny Haeckel Joseph Wright Wright Schwager Schwager Schwager Williamson Williamson Brady Brady Williamson Reuss d'Orbigny d'Orbigny Millett