Complex sentence: Ponting (140 not out) and Damien Martyn (88 not out) were involved in a partnership of 234 runs, then an Australian record, and took the total to 359 runs at the end of the innings.
Split into simpler sentences: Ponting (140 not out) and Damien Martyn (88 not out) were involved in a partnership of 234 runs, a then Australian record. The pair took the team's total to 359 runs at the end of the innings.