The following is a list of fossils which have been obtained from this series:—[42] _Cucullæa_ sp. | _Odostomopsis abeitrensis_. | _Arca_ sp. | _Natica_ sp. | _Exogyra flabellata_. | _Baculites_ (_syriacus?_) | _E. mermeti._ | _Neolobites vibrayeanus_. | _Venus_ (_Artemis?_) sp. | Fish-teeth and bones. Silicified wood and plant-remains (including leaves of Dicotyledons). As regards the age of these beds, it has already been mentioned that the discovery of _Exogyra_ by Capt. Lyons some years ago, in the basal bands of the series, showed them at least to be Cretaceous, although their correlation with the Overwegi stage, on the supposition that the specimens collected were referable to _E. Overwegi_, is now shown to be inadmissible. The fairly extensive assemblage of organic remains obtained from this and the overlying series enables the age of the beds to be determined with accuracy, and Dr. Blanckenhorn, who had the first opportunity of making a careful examination of the collection, has pronounced them to be Cenomanian.[43] The general lithological character of the beds and the prevalence of false-bedded sandstones containing in places silicified wood and plant-remains, including leaves of large trees, point to the conclusion that the beds of this series were deposited in fairly shallow water, perhaps in an estuary, at no great distance from the land. 6.—_Limestones and Variegated Sandstones._—In the walls of the south end of the oasis, the series just described is always overlain by a bed of hard, and usually more or less crystalline, limestone. This limestone forms the lowest member of the series now under discussion. At the extreme southern end of the oasis, on the western side, this basal limestone forms a narrow platform, of only some 200 metres width, separating the respective escarpments of the two series 6 and 7. On the same side further north the upper escarpment is usually further back, and in some localities the beds do not form a single well-marked escarpment at all. The series also occurs forming a line of hills within the depression, these hills owing their existence to a remarkable syncline, by which the beds in question have been folded down to the level of the floor of the depression. The beds of the series form, as a rule, a well-marked group, individual beds often being traceable for great distances and correlable in different parts of the oasis. The group as a whole consists of alternations of brown limestone[44] (with grey crystalline varieties) and variegated sandstones and clayey beds. A typical section, as exposed on the west scarp in N. lat. 27° 53′, is as follows:— _Top._ (Buff-coloured limestone and white chalk of Metres. Division 5.)