Clark, A. H. (1941). A monograph of the existing crinoids. I (4a). Superfamily Mariametrida (except the family Colobometridae. Bull. US natn Mus. 82: 4-1.
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Clark, A. H.
1941
A monograph of the existing crinoids. I (4a). Superfamily Mariametrida (except the family Colobometridae