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Stories about: tetrapod

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 animal... 9 June 2008 02:49 GMT