Subfamily Proisocrininae Rasmussen, 1978

Middle to distal stalk symplexies with multiradiate crenularium, cirri rudimentary or restricted in number, distal attachment disc incrusting substrates in Proisocrinus; often two brachials in primi- and secundibrachitaxes, Included genera: Austinocrinus ? and Proisocrinus . Recent, possibly since Late Cretaceous.