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Erich S. Volschenk, Camilo I. Mattoni, Lorenzo Prendini: Comparative anatomy of the mesosomal organs of scorpions (Chelicerata, Scorpiones), with implications for the phylogeny of the order. In: Zoological Journal of the Linnean Society, 2008, 154 (4), S. 651–675. doi:10.1111/j.1096-3642.2008.00426.x (Online)
W. R. Lourenço: Another New Sub-Fossil Species of Scorpion of the Genus. Palaeogrosphus Lourenço, 2000 from Malagasy Copal. (Scorpiones: Buthidae). In: Boletín Sociedad Entomológica Aragonesa, Nr. 44, 200, S. 135–137. (Online)