- Arens, N.C. - Paleobotany, University of California-Berkeley.
www.ucmp.berkeley.edu/people/nan/nan.html
- Burnham, R.J. - Evolutionary paleobotany, University of Michigan.
www.ummp.lsa.umich.edu/paleobotany/rburnham/rburnham.html
- Marlow, M.G. - Palynology, Simon Fraser University.
www.sfu.ca/~mpellatt/marlow.htm
- Rothwell, G.W. - Fossil and living land plant phylogeny and evolution, Ohio University.
oak.cats.ohiou.edu/~rothwell
- Rull, V. - Cenozoic palynology, PDVSA.
mipagina.cantv.net/valenti/vrchome.htm
- Serbet. R. - Paleobotany, University of Kansas.
www.ukans.edu/~eeb/Main/serbet.htm
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