66 University of Texas Bulletin 



ALBIAN 



In the province of Algiers, near Aumale, Peron 1 found marls with ferruginous fossils: 



Natica Phylloceras velledae 



Solarium Pozosia mayoriana 



Cerithium Desmoceras latidorsatum 



Nucula Desmoceras beudanti 



Leda Uhligella dupiniana 

 Astarte 



CENOMANIAN 



The Cenomanian is uniformally represented in Northern Tunis by an alternation, 

 indefinitely repeated, of marls and limestones. According to Pervinquiere, 2 only the 

 lower part of the stage is fossiliferous. Here a Vraconian fauna is found, with the 

 following species preserved as ferruginous molds: 



Phylloceras ellipticum? Kossmat Turrilites Bergeri Brongniart 



Velledae Mich. var. Seresitensis Wiesti? Sharpe 



Pervinquiere Morrisi Sharpe 



Tanit Pervinquiere Scheuchzerianus Bosc. 



decipiens Kossmat costatus Lamarck 



Lytoceras Flicki Pervinquiere Puzosianus d'Orbigny 



cf. Marut Stoliczka Kerimensis Pervinquiere 



Timotheaum Mayor Forbesiceras obtectum Sharpe 



cf. Kingianum Kossmat Saynoceras Gazellae Pervinquiere 



Hamites simplex d'Orbigny Scaphites aequalis Sowerby 



virgulatus Brongniart obliquus Sowerby 



armatus Sowerby Thomasi Pervinquiere 



Baculites baculoides Mantell Puzosia Paronae Kilian 



Puzosia Chirchensis Pervinquiere Mortoniceras Nicaisei Coquand 



Mayoriana d'Orbigny proratum Coquand 



Placenticeras Uhligi Choffat Tunesites Salambo Pervinquiere 



Saadense Th. et. P. Acanthoceras Brottianum d'Orbigny 



Flickia simplex Pervinquiere Martimpreyi Coquand 



Brancoceras Zrissense Pervinquiere Aumalense Coquand 

 Mortoniceras inflatum Sowerby with its var, Suzannae Pervinquiere 



subinflata, spinosa and orientalis Stoliczkaia dispar d'Orbigny 



Belemites (Hibolites) minimus Lister 



Pervinquiere 3 has described many Cenomanian ammonites from Algeria, some of them 

 ferruginous; the fauna contains Phylloceras, Lytoceras, Hamites, Scaphites, Puzosia, 

 Acanthoceras, Turrilites, Mortoniceras, and several other common genera, and is sim- 

 ilar to that of Tunis. 



1 A. Peron: Essai d'um description geologique d'Algerie pour servir de guide aux 

 geologues dans 1'Afrique franchise. Ann. des Sci. Geol., xiv, art. 4, 202 pp., figs. 1883. 



2 Pervinquiere : Et. pal. tun., Cephalopodes, pp. 417-418. 



3 Pervinquiere, Sur quelques ammonites du cretace algerian. Mem. Soc. Geol. France, 

 No. 42, 1910. 



