Takatika Grit theropod
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| Takatika Grit theropod Temporal range: Danian,
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The Takatika Grit theropod is a non-avian theropod found in a layer of the Paleocene Takatika Grit on Chatham Island, New Zealand.[1] The dinosaur was probably a basal theropod or neotheropod.
Discovery
The known remains of the Takatika Grit theropod, which include a centrum, a pedal phalanx, the proximal head of a tibia, a manual phalanx and a manual ungual, were identified in early 2003 and they were collected in March 2003.[2][1] The fossils were described in 2006.[1]
Controversy of the age of the fossils
When originally described in 2006, the fossils were thought to have belonged to a late surviving "Paleocene dinosaur",[1] but other research indicates that the fossils were probably Campanian or early Maastrichtian (between 83-72 million years old) in age and they were re-worked into Paleocene sediments.[3][4]
References
- ^ a b c d Stilwell, J.D.; Consoli, C.P.; Sutherland, R.; Salisbury, S.; Rich, T.H.; Vickers-Rich, P.A.; Currie, P.J.; Wilson, G.J. (2006). "Dinosaur sanctuary on the Chatham Islands, Southwest Pacific: First record of theropods from the K–T boundary Takatika Grit". Palaeogeography, Palaeoclimatology, Palaeoecology. 230 (4): 243–250. doi:10.1016/j.palaeo.2005.07.017.
- ^ Fordyce, R. E. 2003. Fossils and the history of life. Pp 35-64 in Darby, J. T., Fordyce, R. E., Mark, A. F., Probert, P. K., & Townsend, C. R. (eds), The natural history of southern New Zealand. University of Otago Press, Dunedin. 387 p.
- ^ Fordyce, R. E. 2006. New light on New Zealand Mesozoic reptiles. Geological Society of New Zealand newsletter 140: 6-15.
- ^ Haw, D. 2002. The discovery of fossils in Mangahouanga Stream. Geological Society of New Zealand newsletter 129: 13-14.
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