Phylum Chaetognatha Leuckart 1854 (arrow worm)
Parent taxon: Chaetognathifera according to T.-Y. Park et al. 2024
See also Edgecombe et al. 2011, Nielsen 2012, Sepkoski 2002 and Zrzavy et al. 1998
Sister taxa: none
Subtaxa: Amiskwidae Eognathacantha Paucijaculum Protoconodonta Protoconodontida Timorebestia Titerina
Ecology: nektonic carnivore