Fig. 19From: Roveacrinida (Crinoidea) from Late Triassic (early Carnian) black shales of Southwest ChinaSchematic reconstruction of O. sinensis n. sp. with three aboral elements of different length. The brachials are drawn in side view as they occur on the slabs, with only one of the pair of adoral spines visible in most cases. The main figure is drawn after the holotype (Fig. 6), with arms branching at the second primibrachialBack to article page