Divergence of arthropods and priapulids

Range ~575 million years ago
Organism Metazoa animals
Reference Peterson KJ, Cotton JA, Gehling JG, Pisani D. The Ediacaran emergence of bilaterians: congruence between the genetic and the geological fossil records. Philos Trans R Soc Lond B Biol Sci. 2008 Apr 27 363(1496):1435-43. doi: 10.1098/rstb.2007.2233 p.1439 right column bottom paragraphPubMed ID18192191
Primary Source Nielsen C Animal evolution: interrelationships of the living phyla. 2001 Oxford, UK: Oxford University Press.
Comments P.1439 right column bottom paragraph: "What about other higher-level clades? [Investigators'] estimates suggest that arthropods diverged from priapulids ca 575 Myr ago, suggesting that stem-group panarthropods (primary source) should be present in Upper Ediacaran rocks."
Entered by Uri M
ID 117102