肠鳃纲（学名：Enteropneusta，英文名：acorn worms）是半索动物门的一个纲。现存约有100种。大多数种类在泥沙中穴居，或在石块下生活。例如柱头虫（Balanoglossus）等。
下属分类
- 目的地位未定的科：
- 玉钩虫科 Harrimaniidae
- 原柱头虫科 Protoglossidae ，为玉钩虫科（Harrimaniidae）的异名
- 殖翼柱头虫科 Ptychoderidae
- 无翼柱头虫科 Spengelidae
- Torquaratoridae
- Allapasus Holland, Kuhnz & Osborn, 2012
- Coleodesmium Osborn, Gebruk, Rogacheva & Holland, 2013
- Tergivelum Holland, Jones, Ellena, Ruhl & Smith, 2009
- Torquarator Holland, Clague, Gordon, Gebruk, Pawson & Vecchione, 2005
- Yoda Priede, Osborn, Gebruk, Jones, Shale, Rogacheva & Holland, 2012
- Yoda demiankoopi Holland, Hiley & Rouse, 2022
- Yoda purpurata Priede, Osborn, Gebruk, Jones, Shale, Rogacheva & Holland, 2012[1]
- 目和科的地位未定的属：
- Margaretia Walcott, 1931
- Oesia Walcott, 1911
- Planctosphaera Spengel, 1932
- Spartobranchus Caron, Conway Morris & Cameron, 2013
- Stimpsonia Girard, 1853
- Tornaria Müller, 1848
参考文献
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