188 University of Texas Bulletin 



species which occurs in the Utatur group of India is similar to our species 

 on account of the missing umbilical nodules in a stage of development 

 which still shows the ribs on the ventral part; it differs, though, by its 

 much broader and larger whorls. Another form which by Pervinquiere is 

 considered as belonging to the same group is Ammonites Kotoi Yabe. 1 Per- 

 vinquiere believes that this species is perhaps identical with Fagesia teves- 

 thensis Peron, but it appears to me that we have here a different species 

 although it is certainly related to the African form. According to Yabe 2 

 it is not quite certain from which beds this form has been collected ; it oc- 

 curs either in the Mammites beds or in the Scaphites beds. The age of 

 Fagesia Rudra is not well known, although Kossmat presumes that this 

 species belongs to the middle Utatur group. Fagesia tevesthensis charac- 

 terizes the lower Turonian ; a very similar form exists in beds of the same 

 age in France and another in the Turonian of Portugal. 



Still richer than the fauna of Horizon II is that of the upper limestones 

 which we have distinguished as Horizon III. For their comparison with 

 related species we shall again unite them in a table. 



Lower 



Species from Cetro del Macho Related species Turonian Emscherian 



Vascocerat ' tigermanni n. sp. V. Kossmati Choffat + 



Vascocera*, ex aff. Gamai V. Gamai, Choffat + 



Vascoceras (?) sp. V. (?) arnesense Choffat + 



Vascoceras mohovanense n. sp. V. polymorphum Pervinquiere + 

 Neoptychites aff. cephalotus N. cephalotus Courtiller + 



Neoptychites aff. xetriformis N. xetriformis Pervinquiere + 



Hoplitoides aff. mirabilis H. mirabilis Pervinquiere + 



Inoceramns labiatus Schlotheim /. labiatus Sch'otheim + 



Avicula Aguilerae n. sp. A. gravida Coquand + + 



Tylostoma aff. ovatum Sharpe T. ovatum Sharpe + (Cenomanian to 



upper Turonian 



Nearly all of the groups of ammonites cited in this list occur only in the 

 lower Turonian, to which, according to my opinion, belong also the beds 

 with Vascoceras of the so-called middle Turonian of Portugal. 



Vascoceras Angermanni n. sp. is very similar to V. Kossmati Choffat, 

 but its form is still a little broader, there is no doubt that it belongs to the 

 same group and this is until now only known in the Turonian of Portugal 

 and the lower. Turonian of Egypt. 3 



The fossil which we have called Vascoceras ex. aff. Gamai Choffat is a 

 juvenile form and not very well preserved which is very similar to the 



iYabe, Cret. Ceph. Hokkaido II, 26, pi. 6, figs. 3-4. 

 2 Yabe, Strat. u. Pal. Hokkaido, p. 441. 

 3 Eck, Turon in Tegypten, p. 381, 382. 



