Shallow marine deposits characterize the upper Albian – lower Cenomanian of Northern Algeria. In Djebel Azzeddine (Ouled Nail Mounts), corresponding sediments have been subdivided into three distinctive units A to C. The first discovered ammonite fauna from Bou Saada area allowed attribution a part mid-Cretaceous post-Continental Intercalaire Albian. ammonite-bearing level indicates maximum flo...

The Coniacian non-marine portion of the Frontier Formation in southwestern Montana has been primarily studied stratigraphically, whereas its trace fossil record and relative sedimentological significance have remained overlooked so far. We present first description a assemblage reported from deposits exposed western Centennial Mountains, Beaverhead County, Montana. Three main lithofacies groups...

A comprehensive review and study of the rich dinosaur track record of the Tremp Formation in the southern Pyrenees of Spain (Southwestern Europe) shows a unique succession of footprint localities prior to the end-Cretaceous mass extinction event. A description of some 30 new tracksites and data on sedimentary environments, track occurrence and preservation, ichnology and chronostratigraphy are ...

An uncommonly continuous Lower Jurassic (uppermost Sinemurian and Pliensbachian) section (Llanbedr (Mochras Farm) Borehole, Cardigan Bay Basin, UK) comprises hemipelagic calcareous mudstone, wackestone/siltstone subordinate packstone/sandstone. Some beds show bigradational grading, their sedimentary structures are typical of contourite drift facies. On the basis long-term persistence stability ...