FIG. 9 in Turonian-Santonian echinoids from Egypt

FIG. 9. — Camera lucida drawings: A, plating, tuberculation and poring of subambital ambulacrum in Phymosoma thevestense (Péron & Gauthier, 1879) from the Coniacian-Santonian of Abu Roash; B-D, plating, tuberculation and poring in Thylechinus (T.) sinaiensis n. sp. from the Turonian of Wadi Abu Qaada; B, adapical ambulacrum; C, ambital ambulacral plates; D, subambital interambulacral plates; E-G, plating, tuberculation and poring in Thylechinus (O.) quincuncialis Gregory, 1906 from the Turonian of Wadi Abu Qaada; E, ambital interambulacral plate; F, adapical ambulacrum; G, ambital ambulacrum. Scale bars: A, B, 0.5 mm; C, 0.4 mm; D, 0.8 mm; E, 2 mm; F, 0.9 mm; G, 1 mm.