Osteology and relationships of Lebrunichthys nammourensis gen. And sp. nov. (Teleostei, Crossognathiformes, Pachyrhizodontidae), a fossil fish from the marine Upper Cretaceous of Lebanon

The osteology and the relationships of Lebrunichthys nammourensis gen. and sp. nov., a new pachyrhizodontid fish from the marine Upper Cenomanian of Lebanon, are studied in details. The new genus belongs to the subgroup of Pachyrhizodontidae having a posterior pointed process on the pterotic. The characters of the caudal skeleton indicate that Lebrunichthys occupies an intermediate systematic position between Stanhopeichthys, one the one hand, and all the other genera of the subgroup, on the other hand.