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Description: English: Drawing of Holaspis laevis. Date: 31 December 1895. Source: Werner (1895): Ueber einige Reptilien aus Usambara (Deutsch-Ostafrika). Tafel 5. Author: Lith. art. Anst. v. A. Berger, Wien.
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Description: English: Foot of Holaspis guentheri. Date: 31 December 1919. Source: Schmidt, K.P. (1919) - Contributions to the herpetology of the Belgian Congo based on the collection of the American Congo Expedition, 1909-1915. Pt. I. Turtles, crocodiles, lizards, and chameleons. - Bulletin of the American Museum of Natural History, 39 (2): 385–624. Author: K.P. Schmidt, American Museum of Natural History.
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Description: English: Drawing of Holaspis guentheri. Date: 31 December 1863. Source: Gray (1863): Two new genera of lizards (Holaspis and Poriodogaster). Author: G. H. Ford.
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Description: English: Holaspis guentheri from Congo. Date: 31 December 1919. Source: Schmidt, K.P. (1919): Contributions to the herpetology of the Belgian Congo based on the collection of the American Congo Expedition, 1909-1915. Part I. Turtles, crocodiles, lizards, and chameleons. - Bulletin of the American Museum of Natural History, 39 (2): 385–624. Author: Lang.