Ewin and Thuy—Brittle stars from the British Oxford Clay
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Figure 3. Enakomusium whymanae n. sp., NHMUK EE 16205 (holotype), Coln Quarry, Lechlade, Gloucestershire, UK 51.6951N, 1.7372W; ex situ layer of fissile gray shaley clay from the jason Zone, Peterborough Member, lower Oxford Clay, Callovian, late Middle Jurassic. (1) Ventral side of disk;
(2) dorsal side of disk; (3) detail of mouth plating; (4) detail of ventral interradius; (5) ventral side of proximalmost arm segments; (6) dorsal side of proximalmost arm segments; (7) detail of spine articulation. (1, 2) Scale bar = 1mm; (3–6) scale bars = 500 µm; (7) scale bar = 50 µm. AbGP = abradial genital plate; AOP = apical oral papilla; AOS = adoral shield; AS = arm spine; DAP = dorsal arm plate; LAP = lateral arm plate; LOP = lateral oral papilla; MO = muscle opening; OP = oral plate; OS = oral shield; RS = radial shield; TS = tentacle scale; VAP = ventral arm plate; 1VAP = first ventral arm plate.
