TY - JOUR AU - Fernández López, Sixto Rafael PY - 2003 UR - https://hdl.handle.net/20.500.14352/58756 T2 - Newsletter (International Subcommission on Jurassic Stratigraphy) LA - eng M2 - 15 PB - IUGS KW - Bathonian KW - Ammonites TI - Bathonian Working Group. TY - journal article VL - 30 ER -