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Gerald Mayr i Vanesa L. De Pietri. Earliest and first Northern Hemispheric hoatzin fossils substantiate Old World origin of a “Neotropic endemic”. „Naturwissenschaften”. 101 (2), s. 143–148, 2014. DOI: 10.1007/s00114-014-1144-8. (ang.).
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Cécile Mourer-Chauviré: Birds (Aves) from the Middle Miocene of Arrisdrift (Namibia). Preliminary study with description of two new genera: Amanuensis (Accipitriformes, Sagittariidae) and Namibiavis (Gruiformes, Idiornithidae). W: Martin Pickford i Brigitte Senut (red.): Geology and palaeobiology of the Central and Southern Namib. T. 2: Paleontology of the Orange River Valley. Geological Survey of Namibia, Memoir 19:103–113, 2003. (ang.). Brak numerów stron w książce
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