Late Middle–early Late Albian ammonites from Ecuador

Luc Georges Bulot (1) , W.J. Kennedy (2) , Etienne Jaillard (3) , Emmanuel Robert (4)

1 Centre de sédimentologie-paléontologie
2 University Museum of Natural History
3 LGCA - Laboratoire de Géodynamique des Chaines Alpines
4 EA 3029 - Dynamique des bassins sédimentaires

Ammonites of the Albian genera Brancoceras, Dipoloceras, Mortoniceratoides and Neophlycticeras are described and illustrated for the first time from Ecuador. Precise stratigraphic distribution in the Rio Misahuali field section allows delineation of the Middle/Upper Albian boundary in the Oriente of Ecuador through the recognition of the Dipoloceras cristatum Zone.

Mots clés: Ammonites; Cretaceous; Albian; Ecuador; Subandean Zone

Luc Georges Bulot, W.J. Kennedy, Etienne Jaillard, Emmanuel Robert. Late Middle–early Late Albian ammonites from Ecuador. Cretaceous Research, 2005, 26 (3), pp.450-459. ⟨10.1016/j.cretres.2005.01.008⟩. ⟨insu-00257887⟩