Ernst Haeckel - Kunstformen der Natur (1904), plate 91: Spumellaria The Radiolaria, also called Radiozoa, are protozoa of (diameter 0.1–0.2 mm) that produce intricate mineral skeletons, typically with a central capsule dividing
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Bryozoa-Moostiere from Kunstformen der Natur 1904 by Ernst Haeckel Painting by Les Classics - Pixels
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Amphoridea - Ernst Haeckel (1834 – 1919), from Kunstformen der Natur (Art Forms of Nature) : r/Heavymind
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