Kingdom Animalia Linnaeus, 1758 - animals Phylum Chaetognatha Leuckart, 1854 - chaetognaths Order Phragmophora Cooper, 1955 see Order Biphragmophora Casanova, 1985 Family Eukrohniidae Tokioka, 1965 Genus Heterokrohnia Ritter-Záhony, 1911