Complex sentence: A range of contender GSSP localities currently being studied in detail by the ISCS's Berriasian Working Group include localities as far apart as Mexico, Ukraine, Tunisia, Iraq and the Russian Far East.
Split into simpler sentences: A range of contender GSSP localities are currently being studied in detail by the ISCS's Berriasian Working Group. These include localities as far apart as Mexico, Ukraine, Tunisia, Iraq and the Russian Far East.