PLATE 24 

 Thyrsoporella, Trinocladus 



Figs, i, 2, 6, 7. Trinocladus perplexus Elliott. 1. Solid specimen to show exterior, X50. 

 V. 521 17. 2. Longitudinal section of specimen in which an example of the codiacid Ovulites 

 morelleti Elliott perfectly fits the stem-cell cavity of the larger fossil, X50. V. 521 10. 

 6. Oblique and transverse sections, X50. V. 521 14. 7. Near-longitudinal section to show 

 branch-structure, X50. V. 521 15. Palaeocene-Lower Eocene, Kolosh Formation ; Koi 

 Sanjak, Erbil Liwa, Iraq. 



Fig. 3. Trinocladus tripolitanus Raineri. Longitudinal section, X50. Cretaceous, Turonian ; 

 subsurface, Ras Sadr Well No. 1, Trucial Oman, Arabia. V. 521 11. 



Fig. 4. T. tripolitanus. Oblique-transverse section, X50. Cretaceous, Turonian, Sadr 

 Formation ; Musaiyib Well No. 1, Hilla Liwa, Iraq. V. 521 12. 



Fig. 5. Thyrsoporella silvestrii Pfender. Thin-section fragment to show detail of branch- 

 structure, X50. Middle Eocene ; Jebel Tanamir, Fatah, Oman, Arabia. V. 52113. 



Fig. 8. Trinocladus radoicicae sp. nov. Syntypes, transverse sections, X50. Cretaceous, 

 Maestrichtian, Tanjero Formation ; Diza, Erbil Liwa, Iraq. V. 52 116. 





