Fig. 3

Balanocrinus brachiospina Hess, early Late Oxfordian, Savigna 2b (see Hess 2013a). Postlarval (pentacrinoid stage), prejuvenile columnals and pluricolumnals. a Pluricolumnal of 3, nodal with cirral, connected by synostosis to infranodal below and by symplexy to supranodal above, upper and lower facets synarthrial, M11232. b Pluricolumnal of 2 with nodal and supranodal, upper facet synarthrial, M11233. c Pluricolumnal of 5 with nodal and cirral, with serpulid epizoan partly overgrown by bryozoan “Berenicea”, M11234; c1 lateral, c2 upper facet synarthrial and slightly angular. d Pluricolumnal of 2 pentagonal internodals with ornamented latera, M11235; d1 lateral, d2 upper, synarthrial facet. e Lateral view of internodal, upper facet symplectial, M11236. f Synarthrial facet of pentagonal internodal, M11237. g Lateral view of nodal, proximal (upper) facet symplectial with marginal crenulae, M11238. h Synarthrial facet of somewhat elliptical internodal, M11239. i Synarthrial facet of pentagonal internodal with sharp angles, other facet synostosial, M11240