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* {{cite book |last1=Weichert |first1=Charles K. |last2=Presch |first2=William |year=1975 |title=Elements of Chordate Anatomy |url=https://archive.org/details/elementsofchorda0000weic |url-access=registration |___location=New York |publisher=McGraw-Hill |isbn=978-0-07-069008-0 |lccn=74017151 |oclc=1032188 }}
{{Refend}}
== Further reading ==
* {{cite book |last1=Charlesworth |first1=Brian |author-link1=Brian Charlesworth |last2=Charlesworth |first2=Deborah |author-link2=Deborah Charlesworth |year=2003 |title=Evolution: A Very Short Introduction |series=Very Short Introductions |___location=Oxford; New York |publisher=Oxford University Press |isbn=978-0-19-280251-4 |lccn=2003272247 |oclc=51668497 |url-access=registration |url=https://archive.org/details/evolutionverysho0000char }}
* {{cite book |last=Ellis |first=R. John |author-link=R. John Ellis |year=2010 |title=How Science Works: Evolution: A Student Primer |___location=Dordrecht; New York |publisher=[[Springer Science+Business Media|Springer]] |doi=10.1007/978-90-481-3183-9 |isbn=978-90-481-3182-2 |lccn=2009941981 |oclc=465370643 }}
* {{cite book |last=Horvitz |first=Leslie Alan |year=2002 |title=The Complete Idiot's Guide to Evolution |___location=Indianapolis, IN |publisher=[[Alpha Books]] |isbn=978-0-02-864226-0 |lccn=2001094735 |oclc=48402612 }}
* {{cite book |last1=Krukonis |first1=Greg |last2=Barr |first2=Tracy L. |year=2008 |title=Evolution For Dummies |___location=Hoboken, NJ |publisher=[[John Wiley & Sons]] |isbn=978-0-470-11773-6 |lccn=2008922285 |oclc=183916075 }}
* {{cite book |last=Pallen |first=Mark J. |year=2009 |title=The Rough Guide to Evolution |series=Rough Guides Reference Guides |___location=London; New York |publisher=[[Rough Guides]] |isbn=978-1-85828-946-5 |lccn=2009288090 |oclc=233547316 }}
* {{cite book |last=Sís |first=Peter |author-link=Peter Sís |year=2003 |title=The Tree of Life: A Book Depicting the Life of Charles Darwin, Naturalist, Geologist & Thinker |edition=1st |___location=New York |publisher=[[Farrar, Straus and Giroux]] |isbn=978-0-374-45628-3 |lccn=2002040706 |oclc=50960680 |url=https://archive.org/details/treeoflifebookde00sisp }}
* {{cite book |last=Thomson |first=Keith |author-link=Keith Stewart Thomson |year=2005 |title=Fossils: A Very Short Introduction |series=Very Short Introductions |___location=Oxford; New York |publisher=Oxford University Press |isbn=978-0-19-280504-1 |lccn=2005022027 |oclc=61129133 |url=https://archive.org/details/fossilsveryshort00thom_0 }}
* {{cite book |last1=Villarreal |first1=Luis |year=2005 |title=Viruses and the Evolution of Life|publisher=ASM Press}}
* {{cite book |last=Zimmer| first=Carl |author-link=Carl Zimmer |year=2010 |title=The Tangled Bank: An Introduction to Evolution |___location=Greenwood Village, CO |publisher=Roberts & Company Publishers |isbn=978-0-9815194-7-0 |lccn=2009021802 |oclc=403851918 }}
== External links ==
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