Rhee, Seung Yon. "Gregor Mendel (1822–1884)". Access Excellence. Atlanta, GA: National Health Museum. Archived from the original on 2014-12-27. Retrieved 2015-01-07.
Boughner, Julia C.; Buchtová, Marcela; Fu, Katherine; et al. (June 25, 2007). "Embryonic development of Python sebae – I: Staging criteria and macroscopic skeletal morphogenesis of the head and limbs". Zoology. 110 (3): 212–230. Bibcode:2007Zool..110..212B. doi:10.1016/j.zool.2007.01.005. PMID17499493.
Wilner, Eduardo (March 2006). "Darwin's artificial selection as an experiment". Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences. 37 (1): 26–40. doi:10.1016/j.shpsc.2005.12.002. PMID16473266.
Weinberg, James R.; Starczak, Victoria R.; Jörg, Daniele (August 1992). "Evidence for Rapid Speciation Following a Founder Event in the Laboratory". Evolution. 46 (4): 1214–1220. doi:10.2307/2409766. JSTOR2409766. PMID28564398.
"How many species are there?". Enviroliteracy.org. Washington, D.C.: Environmental Literacy Council. June 17, 2008. Archived from the original on 2015-01-07. Retrieved 2015-01-11.
Boughner, Julia C.; Buchtová, Marcela; Fu, Katherine; et al. (June 25, 2007). "Embryonic development of Python sebae – I: Staging criteria and macroscopic skeletal morphogenesis of the head and limbs". Zoology. 110 (3): 212–230. Bibcode:2007Zool..110..212B. doi:10.1016/j.zool.2007.01.005. PMID17499493.
Weinberg, James R.; Starczak, Victoria R.; Jörg, Daniele (August 1992). "Evidence for Rapid Speciation Following a Founder Event in the Laboratory". Evolution. 46 (4): 1214–1220. doi:10.2307/2409766. JSTOR2409766. PMID28564398.
Boughner, Julia C.; Buchtová, Marcela; Fu, Katherine; et al. (June 25, 2007). "Embryonic development of Python sebae – I: Staging criteria and macroscopic skeletal morphogenesis of the head and limbs". Zoology. 110 (3): 212–230. Bibcode:2007Zool..110..212B. doi:10.1016/j.zool.2007.01.005. PMID17499493.
Wilner, Eduardo (March 2006). "Darwin's artificial selection as an experiment". Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences. 37 (1): 26–40. doi:10.1016/j.shpsc.2005.12.002. PMID16473266.
Weinberg, James R.; Starczak, Victoria R.; Jörg, Daniele (August 1992). "Evidence for Rapid Speciation Following a Founder Event in the Laboratory". Evolution. 46 (4): 1214–1220. doi:10.2307/2409766. JSTOR2409766. PMID28564398.
"A Modern Mass Extinction?". Evolution Library (Web resource). Evolution. Boston, MA: WGBH Educational Foundation; Clear Blue Sky Productions, Inc. 2001. OCLC48165595. Retrieved 2008-01-23.
Theobald, Douglas (2004). "29+ Evidences for Macroevolution"(PDF). TalkOrigins Archive. Houston, TX: The TalkOrigins Foundation, Inc. Part 2: "Whales with hindlimbs". Retrieved 2008-01-27.
Boxhorn, Joseph (September 1, 1995). "Observed Instances of Speciation". TalkOrigins Archive. Houston, TX: The TalkOrigins Foundation, Inc. Retrieved 2007-05-10.
Johnson, George B. "Vestigial Structures". Dr. George Johnson's Backgrounders. St. Louis, MO: Txtwriter, Inc. Archived from the original on 2008-03-10. Retrieved 2015-01-06.
Rhee, Seung Yon. "Gregor Mendel (1822–1884)". Access Excellence. Atlanta, GA: National Health Museum. Archived from the original on 2014-12-27. Retrieved 2015-01-07.
Johnson, George B. "Vestigial Structures". Dr. George Johnson's Backgrounders. St. Louis, MO: Txtwriter, Inc. Archived from the original on 2008-03-10. Retrieved 2015-01-06.
"How many species are there?". Enviroliteracy.org. Washington, D.C.: Environmental Literacy Council. June 17, 2008. Archived from the original on 2015-01-07. Retrieved 2015-01-11.
"A Modern Mass Extinction?". Evolution Library (Web resource). Evolution. Boston, MA: WGBH Educational Foundation; Clear Blue Sky Productions, Inc. 2001. OCLC48165595. Retrieved 2008-01-23.