The Upper Albian ammonite succession in the Montlaux section, Hautes-Alpes, France

A 100 metre succession of Upper Upper Albian sediments in the Montlaux section (les Gipieres-Champfleury), Alpes-de-Haute Provence, France yielded a series of ammonites that provide unequivocal evidence for a Mortoniceras ( Subschloenbachia ) rostratum ammonite Zone succeeded by a Mortoniceras  ( Subschloenbachia ) perinflatum ammonite Zone. On this basis, and evidence from successions described previously, the classic Upper Upper Albian Stoliczkaia dispar Zone is replaced by a sequence, from oldest to youngest, of Mortoniceras ( Mortoniceras ) fallax , Mortoniceras ( Subschloenbachia ) rostratum ,  Mortoniceras ( Subschloenbachia ) perinflatum and Arrhaphoceras ( Praeschloenbachia ) briacensis Zones. The following species are described: Anagaudryceras sacya (FORBES, 1846), Desmoceras latidorsatum  (MICHELIN, 1838), Puzosia ( Puzosia ) mayoriana (D’ORBIGNY, 1841), Pleurohoplites renauxianus (D’ORBIGNY, 1840), Arrhaphoceras sp., Discohoplites simplex WRIGHT & WRIGHT, 1949, Discohoplites subfalcatus (SEMENOV, 1899), Mortoniceras ( Subschloenbachia ) rostratum (J.SOWERBY, 1817), Mortoniceras  ( Subschloenbachia ) perinflatum (SPATH, 1922b), Stoliczkaia ( Stoliczkaia ) dispar (D’ORBIGNY, 1841),  Stoliczkaia ( Stoliczkaia ) clavigera NEUMAYR, 1875, Anisoceras armatum (J.SOWERBY, 1817), Anisoceras perarmatum  PICTET & CAMPICHE, 1861, Anisoceras pseudoelegans PICTET & CAMPICHE, 1861, Idiohamites elegantulus  SPATH, 1939, Hamites venetzianus PICTET, 1847, Lechites ( L .) gaudini (PICTET & CAMPICHE, 1861),  Lechites ( L .) moreti BREISTROFFER, 1936, Mariella ( Mariella ) bergeri (BRONGNIART, 1822), Ostlingoceras ( Ostlingoceras ) puzosianum (D’ORBIGNY, 1842), and Scaphites ( Scaphites ) sp.