Redigerer Krypdyr (avsnitt)

== Referanser ==
<references>
<ref name="Coven">Coven, R (2000): History of Life. [[Blackwell science]], Oxford, UK. [https://books.google.com/books?id=qvyBS4gwPF4C&lpg=PA154&ots=CbCxyrJdo0&dq=diapsids%20ancestors%20synapsids&pg=PA154#v=onepage&q=diapsids%20ancestors%20synapsids&f=false side 154], fra Google Books</ref>

<ref name="Laurin 1995 165–223">{{Cite journal|last=Laurin|first=M.|author2=Reisz, R. R. |year=1995|title=A reevaluation of early amniote phylogeny|url=|journal=[[Zoological Journal of the Linnean Society]]|volume=113|issue=2|pages=165–223|doi=10.1111/j.1096-3642.1995.tb00932.x}} ([http://www.ingentaconnect.com/content/ap/zj/1995/00000113/00000002/art00007 abstract]   {{Wayback|url=http://www.ingentaconnect.com/content/ap/zj/1995/00000113/00000002/art00007 |date=20071001143733 }})</ref>

<ref name="modestoanderson2004">{{Cite journal| last1 = Modesto | first1 = S.P. | last2 = Anderson | first2 = J.S. | year = 2004 | title = The phylogenetic definition of Reptilia | url = http://sysbio.oxfordjournals.org/content/53/5/815.full | journal = Systematic Biology | pmid = 15545258 | volume = 53 | issue = 5| pages = 815–821 | doi = 10.1080/10635150490503026 }}</ref>

<ref name="Ruggiero ''et al.'' (2015)">Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) [https://doi.org/10.1371/journal.pone.0119248 A Higher Level Classification of All Living Organisms]. ''PLoS ONE'' '''10'''(4): e0119248. https://doi.org/10.1371/journal.pone.0119248</ref>

<ref name="SahneyBenton2008RecoveryFromProfoundExtinction">{{Cite journal| url=http://rspb.royalsocietypublishing.org/content/275/1636/759.full.pdf | author=Sahney, S. and Benton, M.J. | year=2008 | title=Recovery from the most profound mass extinction of all time | journal=Proceedings of the Royal Society: Biological | doi=10.1098/rspb.2007.1370 | volume = 275 | pages = 759–65|format=PDF | pmid=18198148 | issue=1636 | pmc=2596898}}</ref>

<ref name="SahneyBentonFerry2010LinksDiversityVertebrates">{{Cite journal | url=http://rsbl.royalsocietypublishing.org/content/6/4/544.full.pdf+html | author=Sahney, S., Benton, M.J. and Ferry, P.A. | year=2010 | title=Links between global taxonomic diversity, ecological diversity and the expansion of vertebrates on land | journal=Biology Letters | doi=10.1098/rsbl.2009.1024 | volume=6 | pages=544–547 | format=PDF | issue=4 | pmid=20106856 | pmc=2936204 | accessdate=2015-11-06 | archiveurl=https://web.archive.org/web/20151106230121/http://rsbl.royalsocietypublishing.org/content/6/4/544.full.pdf+html | url-status=dead }}</ref>

<ref name="The Reptile Database">{{Cite web| url = http://www.reptile-database.org/db-info/SpeciesStat.html | title = The Reptile Database | accessdate = 9. januar 2012}}</ref>

<ref name="Tudge (2000)">Tudge, C. (2000) The Variety of Life. ''Oxford University Press''. ISBN 0198604262.</ref>

</references>