The re-discovery of a distal pluricolumnal of the Middle Triassic Eckicrinus radiatus requires separation of Eckicrinus from Holocrinidae and to establish the new family Eckicrinidae of undetermined systematic position. The pluricolumnal with enlarged radicular cirri with multiradiate articulations acted as a rhizoid holdfast. In the Early and Middle Triassic, three attachment modes occurred among benthic crinoids: (1) discoid or incrusting holdfasts (Encrinida, Millericrinida), (2) rhizoid holdfasts with radicular cirri (Eckicrinidae, Qingyanocrinidae), (3) motile cirri with synarthrial articulations (Holocrinida, Isocrinida). Encrinida and Holocrinida representing the two well known major clades of Middle Triassic crinoids are rooted in different Permian Ampelocrinida rather than in one Early Triassic common ancestor. Eckicrinidae may represent a third lineage. This evidence contributes to challenging the prevalent opinion that just one lineage of each of the five extant echinoderm groups passed the end-Permian extinction event.

重新发现中三叠世Eckicrinus radiatus远端多柱状体需要分离Eckicrinus从 Holocrinidae 并建立系统位置未定的新科 Eckicrinidae。具有多放射关节的扩大的根状卷毛的多柱状突起充当了根状茎的固定物。在早三叠世，底栖海百合发生了三种附着模式：(1) 盘状或结壳状固着(Encrinida, Millericrinida)，(2) 根状卷须(Eckicrinidae，Qingyanocrinidae)，(3) 运动卷状，具有同节关节(Holocrinida, Isocrinida)。Encrinida 和 Holocrinida 代表了中三叠世海百合的两个著名的主要进化枝，它们植根于不同的二叠纪 Ampelocrinida 而不是早三叠世的一个共同祖先。Eckicrinidae 可能代表第三个谱系。