Bateson W (1885) The later stages in the development of Balanoglossus kowalevskii, with a suggestion as to the affinities of the Enteropneusta. Quarterly Journal of Microscopical Science 25: 81-122.
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Bateson, W.
1885
The later stages in the development of Balanoglossus kowalevskii, with a suggestion as to the affinities of the Enteropneusta