• Tetrapod Burrow Dated to 245 Million Years Ago


    The fossilized burrow found recently in Antarctica and dated to the Early Triassic epoch is thought to have belonged to tetrapods – land vertebrates with four legs or appendages resembling legs – and was created when a nearby river overflowed, filling it with fine sand that hardened later on. No remains of the animals inhabiting this burrow were found in the fossil, although there are tracks indicating that animals entered and exited it. The burrow measures about 35.5 centimeters in length, 1...

    Published : 2008-06-09 Read more

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