PLATE 23 

 Terquemella, Thyr sopor ella 



Figs, i, 2. Thyrsoporella silvestrii Pfender. 1. Transverse section, X50. V. 52106. 

 2. Longitudinal section, X50. V. 52107. Middle Eocene ; Jebel Tanamir, Fatah, 

 Oman, Arabia. 



Fig. 3. T. silvestrii. Tangential-longitudinal section, X50. Palaeocene-Lower Eocene, 

 Kolosh Formation ; Sedelan, Sulemania Liwa, Iraq. V. 52108. 



Fig. 4. T. silvestrii. Longitudinal section of large individual, X28. Middle Eocene ; 

 Jebel Tanamir, Fatah, Oman, Arabia. V. 52109. 



Fig. 5. Terquemella globularis Elliott. Solid specimen to show exterior, x8o. Palaeocene, 

 Kolosh Formation ; Bekhme, Erbil Liwa, Iraq. V. 41603. 



Figs. 6, 7. Terquemella bellovacensis Munier-Chalmas. 6. Tangential-transverse section, 

 X55- V. 41589. 7. Vertical section, X55. V. 41590. Palaeocene-Lower Eocene, Sinjar 

 Formation ; Sirwan, Sulemania Liwa, Iraq. 



Fig. 8. T. globularis. Thin-sections, X55. Palaeocene-Lower Eocene, Sinjar Formation ; 

 Sirwan, Sulemania Liwa, Iraq. V. 32496. 



