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Showing content from https://link.springer.com/doi/10.1007/s00114-001-0276-9 below:

Largest bird from the Early Cretaceous and its implications for the earliest avian ecological diversification

With only one known exception, early Cretaceous birds were smaller than their closest theropod dinosaur relatives. Here we report on a new bird from the Early Cretaceous feathered-dinosaur-bearing continental deposits of Liaoning, northeast China, which is not only larger than Archaeopteryx but is nearly twice as large as the basal dromaeosaur Microraptor. The new taxon, Sapeornis chaoyangensis gen. et sp. nov., has a more basal phylogenetic position than all other birds except for Archaeopteryx. Its exceptionally long forelimbs, well-developed deltoid crest of the humerus, proximally fused metacarpals, relatively short hindlimbs and short pygostyle indicate powerful soaring capability and further suggest that by the Early Cretaceous ecological diversification of early birds was greater than previously assumed. Electronic supplementary material to this paper can be obtained by using the Springer LINK server located at http://dx.doi.org/10.1007/s00114-001-0276-9.

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1. Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, China

   Zhonghe Zhou & Fucheng Zhang

1. Zhonghe Zhou
2. Fucheng Zhang

Zhou, Z., Zhang, F. Largest bird from the Early Cretaceous and its implications for the earliest avian ecological diversification. Naturwissenschaften 89, 34–38 (2002). https://doi.org/10.1007/s00114-001-0276-9

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• Received: 09 July 2001

• Accepted: 09 October 2001

• Published: 19 February 2004

• Issue Date: January 2002

• DOI: https://doi.org/10.1007/s00114-001-0276-9

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