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Fig. 9 | Swiss Journal of Palaeontology

Fig. 9

From: Roveacrinida (Crinoidea) from Late Triassic (early Carnian) black shales of Southwest China

Fig. 9

Osteocrinus sinensis n. sp., Lower Xiaowa Formation, marlstone bed (b–g, i, k), shale (a, h, j, l–m), Xiaowa Village. The figure shows aboral elements of widely different length, the upper (proximal) part is largely identical. a, c Small elements with coarsely meshed spine, MHI 1879/9/2 and MHI 1879/4/2. b Element with straight furrow on spine, MHI 1879/4/3. d Long element showing walls of hollow spine, oblique aboral view of isolated radial at lower left, note secundibrachial with pair of adoral spines at right; MHI 1879/4/1. e Long element with coarsely meshed proximal part, pillars of aporous stereom distally broken into fragments; MHI 1879/5/1. f Long element with proximal furrow on spine, MHI 1879/3/1. g Long element with intact spine showing openings, paratype, MHI 1879/2/2. h Short element with coarsely meshed spine; note group of small, partly hollow secundibrachials; MHI 1879/1/7. i Compact conical element, MHI 1879/8/3. j Oblique adoral view of short element showing partly broken rim to radial circlet, MHI 1879/14/2. k Partly articulated specimen with conical aboral element (ae), radial circlet (rc) and first primibrachial (IBr1, at left), aboral view of radial circlet (rc) at lower right; MHI 1879/4/5. l Longer element with deep furrow on blunt spine, MHI 1879/8/1. m Small aboral element and three secundibrachials, MHI 1879/9/2. Scales 1 mm

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