Abstract
THE object of my reply to Prof. MacBride (NATURE, December 16, 1922, p. 806) was not to discuss the classification of Asteroids, but to protest against the character of his unprovoked attack on me. An adequate discussion of the question which group of starfishes is the more primitive, the Phanerozonia or the Spinulosa, requires very much more space than that allotted to a correspondence in NATURE. What I wanted to prove—and, I think, did prove—was the want of foundation in Prof. MacBride's sweeping statement that all admit the Spinulosa to be the more primitive group, tending to represent my view as to this point as perfectly absurd.
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MORTENSEN, T. Echinoderm Larvæ and their Bearing on Classification. Nature 111, 322–323 (1923). https://doi.org/10.1038/111322b0
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DOI: https://doi.org/10.1038/111322b0
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