A New Ammonite Fauna of the Lower Turanian of Mexico 199 



White 1 and Pseudaspidoceras Footeanum Stoliczka. This species is found 

 at the same locality (Bom Jesus, Larangeiras, Provincia de Sergipe) where 

 Vascoceras Harttii occurs. It is therefore probably safe to say that the 

 Salmurian exists in that region in a facies similar to that of northern 

 Africa. 



Pervinquiere finally has noted that his Vascoceras polymorphism is very 

 similar to Ammonites offarcinatus White, 2 a species found at Trapiche 

 das Pedras Velho, Porto dos Barcos and Bom Jardin in the Province of 

 Sergipe. It seems to me probable that this type belongs to the multi- 

 tuberculated Vascoceras. 



Peru: Species from the Salmurian have also been found in Peru. Lis- 

 son 3 described and figured in 1908 two specimens of Vascoceras which he 

 identifies with Vase, amieirense Choffat. There can be no doubt that this 

 form is a real Vascoceras very similar to Vase, amieirense, although the 

 Peruvian form is a little more involute and the cross-section different. 

 Later on Lisson 4 cites from Cuesta de Huanambra, in the province of Caja- 

 marca, a Mammites nodosoides var. Afra Pervinquiere, but notes that the 

 fossil seems to occur in the lower Senonian (Emscherian). From the 

 same locality he cites Hoplitoides ingens v. Koenen ; this makes the deter- 

 mination of the first species doubtful or indicates that both the Salmurian 

 and the Emscherian exist in this locality. This latter opinion is con- 

 firmed by a geological cross-section published by Schlagintweit, 5 whose 

 locality "Cuesta de Huanyanba," is probably identical with the "Cuesta de 

 Huanambra" of Lisson, as both indicate that the place lies to the west of 

 Celendin. Schlagintweit gives the following cross-section: 



6. Senonian beds. 



5. Few meters of marly limestones of yellow color with Mammites 

 nodosoides Schlotheim. Turonian. 



4. About 15 m. sandy dolomitic limestone. 



3. Few meters of yellow marls of the Cenomanian with Exogyra 

 columba Lamarck. 



2. 100-150 meters of light-colored limestone. Vraconian. 



1. Aptian-Gault with fossils. 



United States: In the rest of America no fauna similar to the Medit- 

 erranean facies of the Salmurian appears to have been discovered. In the 

 western United States the Turonian is represented by the Eagleford shales, 



'White, Brazil, p. 213, pi. 22, figs. 1, 2 (won pi. 20, fig. 3). 

 'White, Brazil, p. 219, pi. 23, figs. 3, 4. 

 s Lisson, Amm. del Peru, p. 9, 9a, 9b. 

 4 Lisson, Terr, recon. en el Peru, II, p. 1. 

 5 Schlagintweit, Vravon u. Cenoman i. Peru, p. 57. 



