See here for index to numbers. Top row, left to right (1-5), middle row (6-8), bottom row (9-11) Cyrtophormis spiralis (Haeckel) = Artostrobiidae sp.?, shell Clathrocanium reginae (Haeckel) = Clathrocanium reginae Haeckel, 1887 , shell Anthocyrtium campanula (Haeckel) = Pterocorythidae sp.?, shell…
Kunstformen der Natur
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