Template:Mortensen, 1951
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- Mortensen, T. 1951. A Monograph of the Echinoidea. V, 2. Spatangoida II. Amphisternata II. Spatangidæ, Loveniidæ, Pericosmidæ, Schizasteridæ, Brissidæ. C. A. Reitzel, Copenhagen, 593 pp.
Nomenclatural acts[edit]
- Date of publication: 1951