original descriptionChitwood, B. G. (1933). The Systematic Position of Echinonema grayi Gemmill 1901. Journal of Parasitology, 20(2): 104.[details]
original description(ofEchinonema Gemmill, 1901)Gemmill, J. F. (1901). On a large parasite in the sea
urchin (Echinonema Grayin. gen., n. sp.). <em>Nature.</em> 64: 588.[details]