196 University of Texas Bulletin 



Vascoceras Durandi Thomas et Peron 



Vascoceras barcoicense Choffat 



Pseudotissotia segnis Solger 



Pseudaspidoceras cfr. Footeanum Stoliczka 



Hoplitoides sp. (?) 



Hoplitoides cfr. mirabilis Pervinquiere ( ?) 



Southern Sahara: In Africa there are other localities where fossils 

 indicating- the existence of the Salmurian in a facies similar to that of 

 Portugal, Tunis, Egypt, etc., have been found. Chudeau 1 describes some 

 cephalopods from Damergou, a region which lies nearly exactly where 

 Longitude 9E Greenwich crosses Latitude 15N. This author cites from 

 that part: 



Vascoceras Cauvini Chudeau 



Acanthoceras Gadeni Chudeau 



According to the author Vascoceras Caudini is similar to V. Durandi 

 Thomas et Peron. 



Nigeria? Woods 2 describes several cephalopods from northern Nigeria 

 which seem to belong to Turonian forms. The species described are the 

 following : 



Vascoceras Nigeriense Woods (similar to V. Durandi Thomas et 

 Peron) 



Vascoceras Gongilense Woods (similar to V. subconciliatum Chof- 

 fat) 



Pseudaspidoceras sp. (similar to Ps. Footeanum Stoliczka) 



Hoplitoides Nigeriensis Woods (similar to H. Munieri Pervinquiere) 



Kamerun: One can not doubt that the above cited fauna represents the 

 Turonian and probably the Salmurian; therefore it is rather astonishing 

 that a similar fauna has not been discovered in Kamerun, where only the 

 Neoptychites of the Mungo remind us of Salmurian forms. Solger sup- 

 poses that the Turonian exists in that region, but Guillemain and Harbort 3 

 maintain that the beds in all their extension belong to the Emscherian. 



From what we have seen in the foregoing description we conceive the 

 idea that in northern and central Africa and in Portugal exists a facies 

 of special features representing the Salmurian. This facies is distin- 

 guished by the frequence of the genera: Vascoceras, Fagesia, Neopty- 

 chites, Pseudaspidoceras, and in second place Pseudotissotia, Thomasites 

 and Hoplitoides. 



Chudeau, Ammonites du Damergou, p. 66. 



2 Woods, Cret. dep. northern Nigeria, pp. 281-286. 



3 Guillemain und Harbort. Profil der Kreidesch. a. Mungo, p. 431. 



