7 8 CALCAREOUS ALGAE OF THE MIDDLE EAST 



Diagnosis. Small, disc -like, lenticular or spherical calcareous bodies, with 

 numerous tiny subdermal spherical sporangial cavities, the bodies themselves 

 considered dissociated sporangial structures from Dactyloporeae (Dasycladaceae). 



Terquemella bellovacina Munier-Chalmas 

 (PI. 23, figs. 6, 7) 



1920 Trequemella bellovacina Munier-Chalmas ; Costantin : 1031-32, figs. 13, 14. 



1922 Terquemella bellovacensis Munier-Chalmas ; Morellet : 18, pi. 1, figs. 67-76. 



1955b Acicularis sp. Elliott : 126, pi. 1, figs. 11 (right-hand fig.), 12. 



1956 Terquemella bellovacina Munier-Chalmas ; Elliott : 332. 



Description. Flattened, discoidal, solid calcareous bodies, approximately 

 circular or well-rounded irregular in outline, diameter about 0-57 mm. (up to 0-65 mm. 

 maximum seen), thickness 0-117 mm. (up to 0-143 mm. maximum seen). Hollow 

 globular cavities of about 0-045-0-055 mm. diameter occur just within the outer edge 

 of both surfaces, so that transverse (vertical) sections show two rows each of 8 

 cavities, and tangential-horizontal sections show cavities scattered over the whole 

 section. 



Horizon. Palaeocene of France and of Iraq ; possibly also Central America 

 (Johnson & Kaska 1965). 



Material. Thin-sections from the Sinjar Formation (Palaeocene-Lower Eocene) 

 of Sirwan (Sulemania Liwa), and Banik (Mosul Liwa), Iraq. 



Remarks. The Iraqi species is compatible with the details of the Morellets' 

 description and figures, and the Munier-Chalmas' figures as reproduced by 

 Costantin. T. lenticularis Pia, Rao & Rao (1937) from the Indian Eocene is similar 

 but smaller. 



Terquemella globularis Elliott 

 (PI. 23, figs. 5. 8) 



1956 Terquemella globularis Elliott : 332, pi. 2, fig. 2. 



Description. Near-spherical or flattened ovoid solid calcareous body about 

 0-390 mm. in diameter, globular sporangial cavities 0-033-0-039 mm. in diameter just 

 within outer edge over whole surface, so that equatorial sections show a circle of 

 about eighteen of them, and tangential sections about 0-170 mm. in diameter show 

 eight. 



Horizon. Palaeocene of Iraq. 



Material. Iraq : Kolosh Formation (Palaeocene and Lower Eocene) of Bekhme 

 and of Rowanduz, both Erbil Liwa ; Sinjar Formation (Palaeocene-Lower Eocene) 

 of Sirwan, Sulemania Liwa, and of Chalki, Mosul Liwa. 



Remarks. Not known from outside Iraqi Kurdistan, though Praturlon (1966) 

 records a T. cf. globularis from the same level in Italy. T. parisiensis Munier- 

 Chalmas, from the Paris Basin Middle Eocene, is of similar shape but larger (diameter 

 0-5 mm.) and with fewer sporangial cavities. 



