Trachylina

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Trachylina

an order ofhydrozoan COELENTERATES in which the hydroid stage is suppressed.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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References in periodicals archive ?
Hydrozoans called Trachymedusae have diminutive bells and belong to the jet set.
Estudo filogeografico de duas especies de meduzoarios (Cnidaria), Liriope tetraphylla (Trachymedusae, Gerioniidae) e Olindias sambaquiensis (Limnomedusae, Olindiasidae), em uma regiao do Oceano Atlantico Sul-ocidental.