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[dinosaur] Liaodactylus, new filter-feeding pterosaur from Jurassic of China (free pdf)




Ben Creisler
bcreisler@gmail.com


A new paper:


Liaodactylus primus


Chang-Fu Zhou, Ke-Qin Gao, Hongyu Yi, Jinzhuang Xue, Quanguo L & Richard C. Fox (2017)
Research article: Earliest filter-feeding pterosaur from the Jurassic of China and ecological evolution of Pterodactyloidea.
Royal Society Open Science 2017 4 160672 
DOI: 10.1098/rsos.160672
http://rsos.royalsocietypublishing.org/content/4/2/160672
http://rsos.royalsocietypublishing.org/content/royopensci/4/2/160672.full.pdf


Pterosaurs were a unique clade of flying reptiles that were contemporaries of dinosaurs in Mesozoic ecosystems. The Pterodactyloidea as the most species-diverse group of pterosaurs dominated the sky during Cretaceous time, but earlier phases of their evolution remain poorly known. Here, we describe a 160 Ma filter-feeding pterosaur from western Liaoning, China, representing the geologically oldest record of the Ctenochasmatidae, a group of exclusive filter feeders characterized by an elongated snout and numerous fine teeth. The new pterosaur took the lead of a major ecological transition in pterosaur evolution from fish-catching to filter-feeding adaptation, prior to the Tithonian (145–152 Ma) diversification of the Ctenochasmatidae. Our research shows that the rise of ctenochasmatid pterosaurs was followed by the burst of eco-morphological divergence of other pterodactyloid clades, which involved a wide range of feeding adaptations that considerably altered the terrestrial ecosystems of the Cretaceous world.