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Paleontological Research
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Abstract
Abstract.
All species of the genus Sinamia (Sinamiidae, Amiiformes) are reviewed on the basis of the examination of the holotypes, paratypes, other specimens, and original descriptions of each species. Diagnoses are provided for all species. Phylogenetic analysis supports the monophyly of the family Sinamiidae and demonstrates that the long dorsal fin base in Sinamia and Amia is a matter of convergence. It is considered that the species having a long dorsal fin base lived in still water with vegetation, like Amia calva, while the species having a short dorsal fin base probably lived in the open water.
The author wishes to express his sincere gratitude to Cai Chun Mo (Zhejiang Museum of Natural History, Hangzhou) for letting him examine the type specimens in the museum and Zhang Meemann and Jin Fan (Institute of Vertebrate Paleontology and Paleoanthropology, Beijing) for their help in examining the type specimens and others in their institute. The author is grateful to Lance Grande (Field Museum of Natural History, Chicago) for his critical reading of the manuscript and his valuable comments. The author would like to thank Lionel Cavin for reviewing this paper and providing valuable comments as a referee. This study was supported by JSPS KAKENHI Grant Number JP26400506.
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