Fig. 14From: Asteroidea (Echinodermata) from the Oxfordian (Late Jurassic) of Savigna, Départment du Jura, FrancePlumaster sp. nov. a–e SEM images of ossicles, stenocycloides Subzone, Late Oxfordian, 2b horizon, Savigna. f Early Oxfordian, Q. mariae Zone, Rouges Terres, Switzerland. a Abactinal ossicle; note boss and platform-like areole for articulation and muscle insertion of spine (BMNH EE 13978). b, c Ambulacral ossicles in actinal aspect (EE 13950-1). d Proximal adambulacral in abactinal aspect (EE 13952). e Distal adambulacral in actinal aspect (EE 13953). f Proximal adambulacral in actinal view (EE 13954). a ×35, b–f ×15Back to article page