AMMONITES AND OTHER MACROFOSSILS FROM THE LECTOSTRATOTYPE OF LA FRONTERA FORMATION, LOWER - MIDDLE TURONIAN (UPPER CRETACEOUS) IN SAN FRANCISCO, CUNDINAMARCA (COLOMBIA)

Abstract

A succession of about 109 m thick of the La Frontera Formation lectostratotype (Colombia) is described as well as the fossils Wrightoceras munieri (Pervinquière, 1907), Vascoceras cf. constrictum (Renz and Álvarez, 1979), V. cf. venezolanum Renz, 1982, Kamerunoceras sp., K. cf. turoniense (d’Orbigny, 1850), Hoplitoides cf. lagiraldae Etayo-Serna, 1979, Codazziceras ospinae (Karsten, 1858), Coilopoceras cf. newelli (Benavides-Cáceres, 1956); bivalves: Anomia colombiana Villamil, 1996, and inoceramids; and decapods and plants (woods). These fossils from La Frontera Formation indicate a lower - middle Turonian interval. It could not be confirmed the presence of uppermost Cenomanian deposits in the lower part of the La Frontera Formation.