Template:Tortonese & Downey, 1977

• Tortonese, E. & Downey, M.E. 1977. On the genera Echinaster Mueller and Troschel, and Othilia Gray, and the validity of Verrillaster Downey. (Echinodermata: Asteroidea). Proceedings of the Biological Society of Washington 90(4): 829–830. BHL  
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