Template:Moraes-da-Silva et al., 2022

• Moraes-da-Silva, A., Walterman, S., Citeli, N., Nunes, P.M.S. & Curcio, F.F. 2022. A new oviparous species of Helicops Wagler, 1828 (Serpentes, Xenodontinae) from Brazilian Amazonia with reflections on the evolution of viviparity among hydropsine watersnakes. Zoologischer Anzeiger 296: 91–109. DOI: 10.1016/j.jcz.2021.12.001  
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Nomenclatural acts

• Date of publication: January 2022

New names (1)

• Helicops acangussu