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Modesto, S.P.; Anderson, J.S. (2004). «The phylogenetic definition of Reptilia». Systematic Biology53 (5): 815-821. PMID15545258. doi:10.1080/10635150490503026.
Brysse, K. (2008). «From weird wonders to stem lineages: the second reclassification of the Burgess Shale fauna». Studies in History and Philosophy of Science Part C: Biological and Biomedical Sciences39 (3): 298-313. PMID18761282. doi:10.1016/j.shpsc.2008.06.004.
Modesto, S.P.; Anderson, J.S. (2004). «The phylogenetic definition of Reptilia». Systematic Biology53 (5): 815-821. PMID15545258. doi:10.1080/10635150490503026.
Iwabe, N.; Hara, Y.; Kumazawa, Y.; Shibamoto, K.; Saito, Y.; Miyata, T.; Katoh, K. (29 de diciembre de 2004). «Sister group relationship of turtles to the bird-crocodilian clade revealed by nuclear DNA-coded proteins». Molecular Biology and Evolution22 (4): 810-813. PMID15625185. doi:10.1093/molbev/msi075.
Iwabe, N.; Hara, Y.; Kumazawa, Y.; Shibamoto, K.; Saito, Y.; Miyata, T.; Katoh, K. (29 de diciembre de 2004). «Sister group relationship of turtles to the bird-crocodilian clade revealed by nuclear DNA-coded proteins». Molecular Biology and Evolution22 (4): 810-813. PMID15625185. doi:10.1093/molbev/msi075.
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