Complex sentence: With an age of 2.089 ± 0.081Ga (billion years) it formed just at the beginning of the Amazonian period and is the second oldest Martian meteorite known.
Split into simpler sentences: With an age of 2.089 ± 0.081Ga (billion years) it was formed just at the beginning of the Amazonian period of Mars. It is the second oldest Martian meteorite known.