Gasterosteoformaj

**Gasterosteoformaj**, *Gasterosteiformes*, estas ordo de Aktinopterigaj fiŝoj kiu inkludas la batalemulojn kaj parencojn.

En la Gasterosteoformaj, la pelva zono neniam estis ligita al la *cleithra* rekte, kaj la supramakzelaj, orbitosfenoidaj kaj basisfenoidaj ostoj forestas. La korpo estas ofte parta aŭ komplete kovrita per dermaj platoj.

La nomo "Gasterosteiformes" signifas "osto-ventroj". Ĝi estas derivita el la antikvgreka "gaster" (γαστήρ; "stomako", "abdomeno") + "ostoun" (ὀστοῦν; "osto"). La finaĵo de fiŝordoj "-formes" estas derivita el la Latino kaj indikas "de simila formo".

## Tempolinio de genroj 

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## Bibliografio 
* Kawahara, Ryouka; Miya, Masaki; Mabuchi, Kohji; Lavoue, Sébastien; Inoue, Jun G.; Satoh, Takashi P.; Kawaguchi, Akira & Nishida, Mutsumi (2008): Interrelationships of the 11 gasterosteiform families (sticklebacks, pipefishes, and their relatives): A new perspective based on mitogenome sequences from 75 higher teleosts. Mol. Phylogenet. Evol. 46(1): 224–236. doi:10.1016/j.ympev.2007.07.009 (HTML resumo)
* McAllister, D.E. (1968): Evolution of branchiostegals and classification of teleostome fishes. Bulletin of the National Museum of Canada, Ottawa 221: 1–239.
* Nelson, Joseph S. (2006): Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7
* Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560.

## Eksteraj ligiloj 
* Gasterosteiformes en Animal Diversity Web