Moa’s Ark: Miocene fossils reveal the great antiquity of moa (Aves: Dinornithiformes) in Zealandia. In Proceedings of the VII International Meeting of the Society of Avian Paleontology and Evolution, ed. W.E. Boles and T.H. Worthy
Fossil eggshell and bone fragments from New Zealand's Miocene St Bathans Fauna indicate that two taxa of giant flightless moa (one weighing 20–25 kg and another much larger than this) were present in Zealandia 19–16 Ma. Contrary to recent suggestions, we conclude that moa have a long history in Zealandia, almost certainly extending to before the Oligocene "drowning". This conclusion is consistent with biotic evidence from other sources, which indicates a great antiquity of several Zealandian animals and plants.