Laeta, M., Souza, S. M. F. M., & Siciliano, S. (2010). Cervical ribs and cleft arches in Brazilian <i>Sotalia guianensis</i>: contribution to comparative studies of skeletal morphology in northern and southeastern specimens. Latin American Journal of Aquatic Mammals, 8(1-2), 151-165. https://doi.org/10.5597/lajam00164