Phanerozoic Body Size working group's paper in PNAS
working group, lead by Jonathan Payne (Stanford University), Jennifer Stempien (University of Colorado - Boulder), and Michal Kowalewski (Virginia Polytechnic Institute) have published a paper based on their database of bodysize information.
Payne,J.L., Boyer, A.G., Brown, J.H., Finnegan, S., Kowaleski, M., Krause, R.A., Lyons, S.k., McClain, C.R., McShea, D.W., Novack-Gottshall, P.M., Smith, F.A., Stempien, J.A., Wang, S.C. 2008 Two-phase increase in the maximum size of life over 3.5 billion years reflects biological innovation and environmental opportunity.
They have published their work in PNAS. EurekAlert Press Release [ more ]