FIG. 7 in Turonian-Santonian echinoids from Egypt

FIG. 7. — Camera lucida drawings: A, B, plating, tuberculation and poring in Phymosoma baylei (Cotteau, 1864) from the Turonian of Wadi Abu Qaada; A, ambital ambulacral plates; B, ambital interambulacral plate; C, D, plating, tuberculation and poring in Phymosoma beadnelli (Gregory, 1906) from the Coniacian-Santonian of Abu Roash; C, adapical ambulacral plates; D, ambital interambulacral plates; E, F, plating, tuberculation and poring in Phymosoma thevestense (Péron & Gauthier, 1879) from the Coniacian-Santonian of Abu Roash; E, ambital interambulacral plates; F, subambital ambulacral plates; G, plating and tuberculation of ambital interambulacral plates in Rachiosoma irregulare Fourtau, 1921 from the Turonian of Wadi Abu Qaada. Scale bars: A, 0.8 mm; B, 0.9 mm; C, D, 1 mm; E, F, 0.5 mm; G, 0.7 mm.