Matthew P. Harris; et al. (2006), "The Development of Archosaurian First-Generation Teeth in a Chicken Mutant", Current Biology, 16 (4): 371–377, doi:10.1016/j.cub.2005.12.047, PMID16488870
Kukalová-Peck, Jarmila (11 March 2008). "Phylogeny of Higher Taxa in Insecta: Finding Synapomorphies in the Extant Fauna and Separating Them from Homoplasies". Evolutionary Biology. 35 (1): 4–51. doi:10.1007/s11692-007-9013-4. S2CID25126171.
Robert J. Raikow; et al. (1979), "The evolutionary re-establishment of a lost ancestral muscle in the bowerbird assemblage.", Condor, 81 (2): 203–206, doi:10.2307/1367290, JSTOR1367290
Robert J. Raikow (1975), "The evolutionary reappearance of ancestral muscles as developmental anomalies in two species of birds", Condor, 77 (4): 514–517, doi:10.2307/1366113, JSTOR1366113
Meyer-Rochow, Victor Benno (1989). "A report of webbed feet in a mature axolotl Siredon mexicanum and remarks on webbed feet in Urodela generally". Amphibia-Reptilia. 10: 89–92. doi:10.1163/156853889x00340.
Robert J. Raikow; et al. (1979), "The evolutionary re-establishment of a lost ancestral muscle in the bowerbird assemblage.", Condor, 81 (2): 203–206, doi:10.2307/1367290, JSTOR1367290
Robert J. Raikow (1975), "The evolutionary reappearance of ancestral muscles as developmental anomalies in two species of birds", Condor, 77 (4): 514–517, doi:10.2307/1366113, JSTOR1366113
Matthew P. Harris; et al. (2006), "The Development of Archosaurian First-Generation Teeth in a Chicken Mutant", Current Biology, 16 (4): 371–377, doi:10.1016/j.cub.2005.12.047, PMID16488870
Kukalová-Peck, Jarmila (11 March 2008). "Phylogeny of Higher Taxa in Insecta: Finding Synapomorphies in the Extant Fauna and Separating Them from Homoplasies". Evolutionary Biology. 35 (1): 4–51. doi:10.1007/s11692-007-9013-4. S2CID25126171.