Spadellidae is a

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

of sagittoideans in the order

Phragmophora Phragmophora is an order of sagittoideans in the phylum Chaetognatha. Families * Eukrohniidae Tokioka, 1965 *Heterokrohniidae Casanova, 1985Casanova, J. (1985). Description de l'appareil génital primitif du genre ''Heterokrohnia'' et nouvelle c ...

. Spadellidae prey on

plankton Plankton are the diverse collection of organisms found in water (or air) that are unable to propel themselves against a current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucia ...

and commonly reside in the epipelagic zone of the ocean.

Genera

*'' Bathyspadella'' Tokioka, 1939Tokioka, T. (1939). Three new chaetognaths from Japanese waters. ''Memoirs of the Imperial Marine Observatory'', 7, 129–139. *'' Calispadella'' Casanova & Moreau, 2005Casanova, J. Moreau, X. (2005). ''Calispadella alata'' n. gen., n. sp., the first chaetognath recorded from a hydrothermal vent site (Mid-Atlantic Ridge). ''Journal of Plankton Research'', 27(2), 221–225. *'' Hemispadella'' Casanova, 1996Casanova, J. (1996). A new genus and species of deep benthic chaetognath from the Atlantic: a probable link between the families Heterokrohniidae and Spadellidae. ''Journal of Natural History'', 30, 1239–1245. *'' Paraspadella'' von Salvini-Plawen, 1986von Salvini-Plawen, L. (1986). Systematic notes on ''Spadella'' and on the Chaetognatha in general. ''Zeitschrift für Zoologische Systematik und Evolutionsforschung'', 24(2), 122–128. *'' Spadella'' Langerhans, 1880Langerhans, P. (1880). Die Wurmfauna Madeiras. ''Zeitschrift für Wissenschaftliche Zoologie'', 33, 271–316.

References

Chaetognatha Protostome families {{Chaetognatha-stub