Chaetognatha
The Chaetognatha or chaetognaths (meaning ''bristle-jaws'') are a phylum of predatory marine worms that are a major component of plankton worldwide. Commonly known as arrow worms, about 20% of the known Chaetognatha species are benthic, and can ...
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Families
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Eukrohniidae
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 78 ...
Tokioka, 1965
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Heterokrohniidae
Heterokrohniidae is a family 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). Descrip ...
Casanova, 1985Casanova, J. (1985). Description de l'appareil génital primitif du genre ''Heterokrohnia'' et nouvelle classification des Chaetognathes. ''Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences de Paris'', 301(8), 397–402.
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Krohnittellidae
Krohnittellidae is a family 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). Descriptio ...
Bieri, 1989Bieri, R. (1989). Krohnittellidae and Bathybelidae, new families in the phylum Chaetognatha; the rejection of the family Tokiokaispadellidae and the genera ''Tokiokaisapadella'', ''Zahonya'', and ''Aberrospadella''. ''Proceedings of the Biological Society of Washington'', 102(4), 973–976.
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Spadellidae
Spadellidae is a family of sagittoideans in the order Phragmophora. 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). Th ...
Tokioka, 1965
See also
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Taxonomy of invertebrates (Brusca & Brusca, 2003)
The biological systematics and taxonomy of invertebrates as proposed by Richard C. Brusca and Gary J. Brusca in 2003 is a system of classification of invertebrates, as a way to classify animals without backbones.
Prokaryotes
*Kingdom
*Kingdom ...