Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis Author Linnaeus, Carolus text 1758 Laurentius Salvius Stockholm https://archive.org/download/mobot31753000798865/mobot31753000798865.pdf book 2C6327E1-5560-4DB4-B9CA-76A0FA03D975 https://doi.org/10.5962/bhl.title.542 3922206 Ramphastos picatus [ spec. nov. ] R. rostro rubro: apice nigro: carina compressa. Pica brasiliensis. Alb. av. 2. p. 24. t. 25. Aldr. orn. l. 20. c. 19. Habitat in America meridionali. Rostrum magnum inter congeneres ; etiam basi nigricans .