Fig. 13
From: Balanocrinus and other crinoids from Late Jurassic mudstones of France and Switzerland
Archaeometra scrobiculata (Goldfuss), Early Oxfordian, Andelot-Morval; the figured specimens show the size and variability of the species from this outcrop. a Radial circlet with embedded basals, M11241, a1 proximal, note basal rosette in center, a2 distal. b Oblique lateral-upper (distal) view of centrodorsal with four basals, basal in foreground missing, M11242. c Oblique upper-lateral view of small hemispherical centrodorsal, note elevated ledges for the basals, M11243. d Upper view of smallest centrodorsal from the outcrop, M11359. Lateral view of smaller cups with centrodorsal, e cup with high free radial surface and low articular facets, M11244, f cup with lower free radial surface and high articular facets, M11245. g Centrodorsal, M11246. h Centrodorsal with circular, rimmed cirrus sockets, M11360, h1 adoral, with flat, slightly crenulated ledges for the basals, h2 lateral view. i Lateral view of large cup with centrodorsal, radials with moderately high muscle fossae, M11361. j Large cup with comparatively low centrodorsal, muscle fossae high, M11362