M. Gayet et Fj. Meunier, NEW FOSSIL POLYPTERIFORMES FROM THE CONIA CIAN-SENONIAN OUTCROP OF INBECETEM (NIGER), Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 322(8), 1996, pp. 701-707
Study of the Coniacian-Senonian ichthyofauna of In Becetem (Niger) has
led to the discovery of ten new species of Polypteriformes, regrouped
into three genera, two of which are new. The third one, the present P
olypterus is now known at least since the Upper Cretaceous. Two specie
s are characterized by asymmetrical pinnules which should be inclined
at about 45 degrees alternately on the right and on the left when erec
t.