Proterosuchia
proterosuchia.gif
Proterosuchia adalah salah satu subordo Thecodontia; khususnya yang paling primitif dan purba. Archosaurus primitif mirip buaya ini hidup di awal era Trias

Bacaan lanjut

http://en.wikipedia.org/wiki/Proterosuchia
http://www.absoluteastronomy.com/topics/Proterosuchia
http://www.amazon.co.uk/Proterosuchia-early-evolution-archosaurs-Comparative/dp/B0006CFGAG
Sumber gambar
http://www.bertsgeschiedenissite.nl/geschiedenis%20aarde/archosauromorpha.htm

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