. Bulletin de la Société géologique de France. Geology. abc Fig. 1. — Chara helicteres BRO>fGN., forme typique. — x 15. a, proiil ; h, suture; c, base. — Calcaire de Mortemer de Montgérain (Oise).. 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 géologique de France. Paris : La Société

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Keywords: ., bookcentury1800, bookpublisherp, booksubjectgeology, bookyear1830