. Bulletin de la Société belge de géologie, de paléontologie et d'hydrologie. Geology; Paleontology. Bii!l. Soc. belge de Gfel, de Paléonlol, A d'Hydrol, T, XIII, 1899, , PI. Spire denticulée de Helicoprion Bessonowi {Karpinsky). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Société belge de géologie, de paléontologie et d'hydrologie. Bruxelles : The society

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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology