Echinoidea name details
original description
Mortensen, T. 1927a. A New Species of the Genus Echinarachnius from Japan. Annotationes Zoologicae Japonenses 11, 195-201. page(s): 195; pl. 1: figs 1-4 [details] 
Syntype MCZ 5022, geounit Japanese Exclusive Economic Zone [details]
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