Nasitrema sp.

Grampus griseus (Cuvier), central nervous system, Bahia (Maia-Nogueira 2000). Sotalia guianensis (van Bénéden), nasal cavity, Rio de Janeiro (Di Beneditto & Ramos 2001, 2004; Melo et al. 2006).

Tursiops truncatus (Montagu), nasal cavity, Rio de Janeiro (Santos et al. 1996; Pinto et al. 2004).