Fernández López, Sixto Rafael2023-06-202023-06-2020000253-6730https://hdl.handle.net/20.500.14352/58914The study of ammonites of the Bajocian/Bathonian boundary from Serra de la Creu (Tivissa, province of Tarragona), a locality of the Catalan Basin, allows to recognize several bio- and chronostratigraphic units commonly missing in the Iberian Basin. The Parkinsoni Zone (Upper Bajocian) and the lowermost Zigzag Zone (Lower Bathonian) established for NW Europe areas can be identified in the Catalan and Iberian basins (Spain), although the ammonite fossil assemblages are composed by Submediterranean taxa.engjournal articlehttp://www.ville-ge.ch/mhng/paleo/open access564.53(234.1)Middle JurassicAmmonoidsTaphonomyBiostratigraphyChronostratigraphyPalaeobiogeographyIberiaPaleontología2416 Paleontología