The base of a silicified Triassic tree stump fossilised in braided river sandstone of the Beacon Supergroup at Collinson Ridge, Shackleton Glacier, Transantarctic Mountains. |
The base of a silicified Triassic tree stump fossilised in braided river sandstone of the Beacon Supergroup at Collinson Ridge, Shackleton Glacier, Transantarctic Mountains. |