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Scientific classification
Kingdom: Animalia
Phylum: Chaetognatha
Class: Sagittoidea
Order: Phragmophora
Family: Eukrohniidae
Tokioka, 1965
  • Eukrohnia

Eukrohniidae is a family of arrow worms.


The first species, Eukrohnia hamata, of this family was identified by Karl Möbius in 1875. The genus was named Eukrohnia by Ritter-Záhony in 1909 after August David Krohn. The whole family was named Eukrohniidae by Takasi Tokioka in 1965.[1] One of the species, Eukrohnia fowleri, is bioluminescent.[2]


  • Genus Eukrohnia, with 11 valid species.[3]


  1. ^ Tokioka, T. (1965) The taxonomical outline of Chaetognatha. Publications of the Seto Marine Biological Laboratory, 12:335-357.
  2. ^ Thuesen, E. V., F. E. Goetz & S. H. D. Haddock (2010). "Bioluminescent organs of two deep-sea arrow worms, Eukrohnia fowleri and Caecosagitta macrocephala, with further observations on bioluminescence in chaetognaths". The Biological Bulletin. 219 (2): 100–111. PMID 20972255. 
  3. ^ Thuesen, Erik V. (2011). Eukrohnia Ritter-Záhony, 1909. Accessed through: World Register of Marine Species at on 2012-04-22