Template:Bell, 1881b

• Bell, F.J. 1881. Observations on the characters of the Echinodea. IV. The Echinometridae; their affinities and systematic position. Proceedings of the Zoological Society of London. 49(2): 410-433. DOI: 10.1111/j.1096-3642.1881.tb01296.x . BHL.  
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Nomenclatural acts

• Date of publication: 1881