Fig. 21
From: Crinoids from the Middle Jurassic (Bajocian–Lower Callovian) of Ardèche, France
Columnals of Cyrtocrinus praenutans n. sp., Lower Bathonian, La Pouza. a High spindle-shaped columnal, a1 upper facet, a2 lateral, a3 lower facet, M 10968. b Pluricolumnal of two convex ossicles, b1 upper facet, b2 lateral, M10969. c Concave columnal, c1 upper facet (lower facet is similar), c2 lateral, M10970. d Cylindrical columnal, d1 upper facet with strong irregular crenulae (lower facet is similar), d2 lateral, M10971. e Convex columnal, e1 presumed proximal concave facet, e2 lateral, e3 presumed distal facet, M10972. f High columnal, f1 presumed proximal facet, f2 lateral, f3 presumed distal facet with wide lumen and strong crenulae, M10973. g High concave columnal, g1 presumed proximal facet, g2 lateral, g3 presumed distal facet with wide lumen and weak crenulae, M10974. h Columnal with irregular crenulae and narrow lumen, h1 upper facet, h2 lateral, h3 lower facet, M10975. i Slightly conical columnal with similar facets, i1 upper facet, i2 lateral, i3 lower facet, M10976. j High thin columnal, j1 upper facet, j2 lateral, M10977. k Convex columnal, k1 upper facet (lower is similar), k2 lateral, M10978. l Lens-like columnal, l1 upper facet, l2 lower facet, M10960. m Small thin columnal, M10998. Scale bars 1 mm