Cambrian worms (Introduction)

by David Turell , Thursday, October 11, 2012, 15:23 (4428 days ago) @ David Turell
edited by unknown, Thursday, October 11, 2012, 15:35

These worms have not widely diversified since the Cambrian. They were diversified in the Cambrian. Darwin presents a cone-like development of diversity in his theory, but certain data from evolution such as this presentation implies that various areas of evolution may be cylindrical in development.-http://www.arn.org/blogs/index.php/literature/2012/10/11/priapulids_challenge_the_cone_of_increas-More evidence of long term stasis of oceanic forms:-http://www.sciencedaily.com/releases/2012/10/121010172116.htm