Fig. 15
From: Roveacrinida (Crinoidea) from Late Triassic (early Carnian) black shales of Southwest China
Osteocrinus sinensis n. sp., Lower Xiaowa Formation, Xiaowa Village (inventory number 1879) and Wolonggong (inventory number 2137). Elements isolated from shales. a–e Aboral elements of juvenile individuals; a, b oblique adoral (upper) view, MHI 1879/15/1, MHI 1879/15/2; c–e lateral view (rim partly broken in e), MHI 1879/15/3, MHI 2137/5/1, and MHI 1879/15/5. f Aboral view of radial circlet with facet to aboral element, MHI 1879/15/6. g Aboral (exterior) view of radial, MHI 1879/15/7. h Radial articular facet (mf muscle fossa, ac axial canal, alf aboral ligament fossa), MHI 1879/15/8. i Aboral view of small radial circlet, MHI 1879/15/9. j Adoral view of small radial circlet, 1879/15/10. k Synostosial facet of small secundibrachial, MHI 1879/15/11. l Coarsely meshed stereom and lateral openings of first primibrachial near proximal facet, MHI 2137/3/1. SEM photographs: a–c, e–k, Basel; d, l, Bonn