Fig. 7
From: Asteroidea (Echinodermata) from the Oxfordian (Late Jurassic) of Savigna, Départment du Jura, France
Tylasteria jurensis (Münster in Goldfuss). Arm fragment (a) and ossicles probably originating in same individual, horizon 2b, Savigna BMNH EE 13940). a Abactinal aspect of distal arm, to show abactinal ossicles and sm spination. b Same, in actinal aspect, to show im spination. c Isolated distal IM. b Ambulacral ossicle in actinal aspect. Adambulacral ossicles in actinal (d) and actinal (g) views; compare with Fig. 6d. e Abactinal ossicle in oblique view. f Spine from abactinolateral margin of sm (compare a). h Actinal ossicle in actinal aspect. a1 ×4, b ×6, c, d, g ×10, e, f, h ×20