72 CALCAREOUS ALGAE OF THE MIDDLE EAST 



Tawi Silaim, Oman. In Iraq this species (or a comparable species of Vermiporella) 

 occurs rarely in the Upper Permian Darari Formation of Harur, and in the subsurface 

 Upper Permian of Atshan no. i well, both in Mosul Liwa. Recorded by Erk & 

 Bilgutay (1961) from the Permian of Sarikaya, Diskaya Mountains, near Bursa, and 

 from the Adana Basin, Turkey. 



Remarks. See discussion under " Genus Pseudovermiporella " above. 



Pseudovermiporella elliotti Erk & Bilgutay 



1961 Pseudovermiporella elliotti Erk and Bilgutay : no, pi. 2. 



Remarks. This species appears similar in many characteristics and in mode of 

 growth to the type-species. It differs, however, in the following points, summarized 

 from the authors' description and comparisons. It is a smaller species (external 

 diameter up to 0-539 mm -)> the pores are hexagonal, not rounded in cross-section and 

 both smaller in diameter (0-025-0-030 mm.) and more closely set (interpores of o-oio- 

 0-013 mm. thickness). The individuals are said to occur singly, and not tangled or 

 closely associated as in P. sodalica. It is not clearly stated whether an inner thin- 

 walled tube occurs, though small individuals occur within larger ones, as in the larger 

 species. It is recorded from the Turkish Permian at Kozan, Adana Basin and from 

 various localities near Ankara. In the Adana area the two species occur commonly 

 in rocks of Middle Permian age. 



Genus SALPINGOPORELLA Pia 1918 



Diagnosis. Small, rod-like, thick-walled, calcified, tubular dasyclad, with regular 

 successive verticils of relatively few simple single branches which widen to the 

 exterior and open as simple pores : thallus not segmented, but interverticil portions 

 sometimes outwardly slightly convex and delimited by grooves. 



Salpingoporella annulata Carozzi 

 (PI. 20, figs. 3, 4, 6, 7) 



1953 Salpingoporella annulata Carozzi ; 384, figs. 1-55. 



1955b Salpingoporella annulata Carozzi ; Elliott : 125, 126. 



1955a Salpingoporella annulata Carozzi ; Carozzi : 55, pi. 6, figs. 5-7, text-fig. 15. 



i960 Salpingoporella annulata Carozzi ; Elliott : 221. 



Description (based on Carozzi). Small, tubular, calcified dasyclad, straight or 

 slightly curved and usually occurring in fragments of up to 1 mm. or more in length, 

 external diameter 0-30-0-64 mm., internal diameter 0-10-0-25 mm. The thick walls 

 perforated by horizontal verticils of branches at about 0-15-0-20 mm. apart, each 

 verticil consisting of 8-12 simple straight radial branches which widen terminally 

 and open in a shallow external horizontal annular groove. Pores alternate in 

 position from one verticil to the next, and between them the external interverticil 

 walls are gently convex. 



