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1 April 2014 The First Basal Neoceratopsian Dinosaur from the Lower Cretaceous Kanmon Group in Kyushu, Southwestern Japan
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Abstract

An isolated tooth specimen from the Lower Cretaceous Kanmon Group in Kyushu Island, south-western Japan was initially identified as a hadrosaurid. It is reidentified herein as a neoceratopsian tooth based on the presence of a wide and prominent primary ridge on the crown, a shallow indentation on the right side of the primary ridge in non-occlusal view, and a horizontally oriented cingulum at the base of the crown. The poorly developed cingulum and shallow indentation suggest that it does not pertain to a ceratopsid, but is only referable to a basal neoceratopsian. This represents the first basal neoceratopsian specimen from the Lower Cretaceous of Kyushu Island.

© by the Palaeontological Society of Japan
Kyo Tanoue and Yoshihiko Okazaki "The First Basal Neoceratopsian Dinosaur from the Lower Cretaceous Kanmon Group in Kyushu, Southwestern Japan," Paleontological Research 18(2), 77-81, (1 April 2014). https://doi.org/10.2517/2014PR008
Received: 17 August 2013; Accepted: 18 October 2013; Published: 1 April 2014
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