ブイトレラプトル
1 2 3 4 5 Makovicky, Peter J.; Apesteguía, Sebastián; Agnolín, Federico L. (2005). “The earliest dromaeosaurid theropod from South America”. Nature 437: 1007–1011. Bibcode: 2005Natur.437.1007M. doi:10.1038/nature03996. PMID 16222297.
↑ EurekAlert!: "Newly discovered birdlike dinosaur is oldest raptor ever found in South America: Relative of Velociraptor rewrites evolutionary charts", 12-10-2005.
↑ Hu, D.; Hou, L.; Zhang, L. & Xu, X. (2009), “A pre-Archaeopteryx troodontid theropod from China with long feathers on the metatarsus”, Nature 461 (7264): 640–643, Bibcode: 2009Natur.461..640H, doi:10.1038/nature08322, PMID 19794491
↑ New Scientist: "Feathered flight, so good they did it twice?", 15-10-2005.