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. 2023 Sep 11;142(1):19. doi: 10.1186/s13358-023-00282-6

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Fig. 14 — Letter of Roth inviting the paleontologist Hans Georg Stehlin from Basel to become his successor at the Museo de La Plata. Courtesy of Dr. Loïc Costeur, from archives at the Naturhistorisches Museum in Basel