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1 September 2012 New Bird Remains from the Middle Eocene of Guangdong, China
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Abstract

We describe a new avian taxon (Sanshuiornis zhangi gen. et sp. nov.) from Middle Eocene black oil shales in the Huayong Formation of Guangdong Province, south China. The specimen consists of a distal tibiotarsus and a complete foot with tarsometatarsus and pedal digits in articulation. A preliminary phylogenetic analysis does not resolve the affinities of the fossil, but the bones show resemblances to some “ciconiiform” birds. The peculiar hypotarsus morphology, which is block-like and exhibits four cristae, resembles that of the early Eocene Rhynchaeites, which is a stem group representative of the Threskiornithidae. The new Chinese fossil has, however, proportionally longer legs than Rhynchaeites and its phylogenetic affinities probably cannot be resolved without further material.

Min Wang, Gerald Mayr, Jiangyong Zhang, and Zhonghe Zhou "New Bird Remains from the Middle Eocene of Guangdong, China," Acta Palaeontologica Polonica 57(3), (1 September 2012). https://doi.org/10.4202/app.2011.0061
Received: 2 June 2011; Accepted: 10 July 2011; Published: 1 September 2012
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