Fig. 1From: Evolutionary transformation of mouthparts from particle-feeding to piercing carnivory in Viper copepods: Review and 3D analyses of a key innovation using advanced imaging techniquesOverview of evolutionary relations, feeding modes, species diversity, depth distributions, and mandible and ventral tooth form of Viper copepods (Heterorhabdidae, Calanoida). Phylogeny after Ohtsuka et al. [9] and (Hirabayashi et al. [10]), feeding modes from Ohtsuka et al. [9], species diversity from WoRMS (http://www.marinespecies.org/, July 2017), ocean depth ranges from Ohtsuka et al. ([9]; B- Bathypelagic, M- Mesopelagic, E- Epipelagic), SEM images from Ohtsuka et al. [9], drawings by TK. Asterisk: inferred origin of poison-injection system (Hirabayashi et al. [10]), Dashed circle: ventral toothBack to article page