Fig. 6From: Gymnodiadema and the Jurassic roots of the Arbacioida (stirodont echinoids)Camera lucida drawings of plating in Magnosia. Magnosia termieri Lambert, 1931; Bajocian, Enjil, Morocco: NHM EE13928: a apical disc, b ambital ambulacral plate compounding, c adoral phyllode arrangement, e NHM EE13929; adoral interamblacral plating with basicoronal plate shaded (except for basicoronal tubercle). d Magnosia forbesi (Wright, 1851), NHM 40004, Garantiana garantiana Zone, late Bajocian of Dundry, Somerset, UK; detail of phyllode for comparisonBack to article page