The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Delage, Y.; Hérouard, E. 1898. Traité de Zoologie concrète. Les Prochordés, 8: 132-372.
- Wells, A., and W. W. K. Houston, eds. 1998. Hemichordata, Tunicata, Cephalochordata. Zoological Catalogue of Australia, vol. 34. xiii + 298
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