Proisocrininae is a subfamily of crinoids. It is defined by few and/or rudimentary cirri restricted close to the arms, a well-individualized aboral cup, short brachitaxes, a homeomorphic stalk, and an attachment disk that "incrusts" the substrate.
Genera: †Austinocrinus De Loriol, 1889 Proisocrinus AH Clark, 1910
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