Fig. 14
From: Roveacrinida (Crinoidea) from Late Triassic (early Carnian) black shales of Southwest China
Osteocrinus sinensis n. sp., Lower Xiaowa Formation, marlstone bed (a, b, d, e), shale (c), Xiaowa Village. Partly weathered secundibrachials with hollow shafts (a–e) from different parts of the arms. a Secundibrachials and long first primibrachial with collapsed and partly weathered upper (distal) part at left, the proximal part of the primibrachial lacks adoral spines; MHI 1879/1/13. b Group of articulated secundibrachials with opening near the synostosial facet, MHI 1879/4/8. c Secundibrachial with thin wall below the straight synostosial facet, paratype, MHI 1879/11/1. d Juvenile or distal secundibrachials at lower left and pair of longer narrow secundibrachials at right, one of them with a hollow space extending from near the muscular facet at the bottom to the upper end, the other with collapsed upper part; MHI 1879/11/2. e. Three secundibrachials, two of them with damaged shaft; MHI 1879/9/1. Scales  1 mm