Nishikawa, T. (2004). A New Deep-water Lancelet (Cephalochordata) from off Cape Nomamisaki, SW Japan, with a Proposal of the Revised System Recovering the Genus Asymmetron. Zoological Science 21: 1131–1136, available online athttp://www.bioone.org/doi/pdf/10.2108/zsj.21.1131?cookieSet=1[details]
original descriptionNishikawa, T. (2004). A New Deep-water Lancelet (Cephalochordata) from off Cape Nomamisaki, SW Japan, with a Proposal of the Revised System Recovering the Genus Asymmetron. Zoological Science 21: 1131–1136, available online athttp://www.bioone.org/doi/pdf/10.2108/zsj.21.1131?cookieSet=1[details]