Fig. 2From: Stalked crinoids from Gan (Late Ypresian, southwestern France): exceptional stereom preservation, paleoecology and taxonomic affinitiesMorphology of Conocrinus-type columnal (a) and quantitative characters measured (b). cf fulcral ridge, lf 8-shaped ligament fossae, D greatest facet diameter, d smallest facet diameter, d′ diameter at mid-height, H ossicle height. Scale bar: 100 µmBack to article page