Turonian-Santonian echinoids from Egypt Author Mohamed Abdelhamid, Marouf Abdel-Aty Author Moustafa Azab, Mahmoud text Geodiversitas 2012 2012-09-30 34 3 575 615 http://dx.doi.org/10.5252/g2012n3a7 journal article 10.5252/g2012n3a7 1638-9395 5378120 28D04AB5-0407-40DF-ABB0-0C1184A27655 Trochalosoma ( Trochalosoma ) gharamulensis Abdelhamid & Azab, 2003 ( Fig. 8N ) Trochalosoma ( Trochalosoma ) gharamulensis Abdelhamid& Azab, 2003: 860 , pl. III, figs B-D. — El Qot 2006: 138 , pl. 31, figs 11, 12. MATERIAL EXAMINED. — Three specimens from the Turonian of Wadi Abu Qaada (Wata Formation), AS- UAQE 70-72, Wadi Abu Qaada echinoid horizon 1 ( QEH 1). DESCRIPTION Outline pentagonal to round. Adapical surface flattened to feebly convex. Adoral surface not depressed around peristome. Ambulacral area wide, feebly swollen. Poriferous zones biserial and wide adapically constituting most of ambulacrum width near apical disc, narrow and uniserial at ambitus, wide and crowded near peristome forming oblique triads of pore pairs.Major ambulacral plates trigeminate near peristome, quadrigeminate at ambitus, polygeminate with five pore pairs near apical disc. Interambulacral area with two columns of imperforate, noncrenulated primary tubercles; beside two external columns of secondary, nonconfluent tubercles as large as the primary tubercles but don’t persist until peristome and apical disc. Gill slits conspicuously developed. TABLE 7. — Measurements (in mm) of Goniopygus innesi Gauthier, 1901 . Abbreviations: see Material and methods.

D	H/D	Wa/Wi	Na	Ni	La/D	Dp/D
Range	6.6-14.2	0.46-0.58	0.46-0.59	7-11	6-7	0.41-0.59	0.50-0.56
Mean	6.7	0.52	0.51	9	6.5	0.5	0.53

REMARKS Abdelhamid & Azab (2003) erected this species from the Cenomanian of Gabal Gharamul, the Eastern Desert, Egypt . It is recorded here from the Turonian of Wadi Abu Qaada, west Sinai , Egypt . Order ARBACIOIDA Gregory, 1900