the opening near the anus which leads from the atrium to the exterior in Amphioxi. Also called atrial pore

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • atriopore — noun a hole in a lancelet through which water exits the body …   Wiktionary

  • atriopore — atri·o·pore …   English syllables

  • atriopore — ˈā.trēəˌpō(ə)r noun ( s) Etymology: atri + pore zoology : the opening of an atrium : an atrial pore (as in amphioxus) …   Useful english dictionary

  • cephalochordate — /sef euh loh kawr dayt/, adj. 1. belonging or pertaining to the Cephalochordata. n. 2. any chordate animal of the subphylum Cephalochordata, having fishlike characters but lacking a spinal column, comprising the lancelets. [ < NL Cephalochordata; …   Universalium

  • Chordate — Chordata Temporal range: Early Cambrian – Recent, 540–0 Ma …   Wikipedia

  • Lancelet — Lancelets Lancelet (Branchiostoma lanceolatum) Scientific classification Kingdom: Animalia …   Wikipedia

  • Pharyngeal slit — Pharyngeal slits, characteristic of both hemichordata and chordata, are used by organisms in feeding. The wall of the pharynx is perforated by up to 200 vertical slits, which are separated by stiffening rods.Rows of beating cilia cause currents… …   Wikipedia

  • Acrania — Cephalochordata Céphalocordés …   Wikipédia en Français

  • Amphiocus — Cephalochordata Céphalocordés …   Wikipédia en Français

  • Amphioxus — Cephalochordata Céphalocordés …   Wikipédia en Français

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