I'm writing you because I'm interested on the phylogenetic origin
I would like to contact people who know or who wish to discuss about
the origin of this manifestation and its consecuences.
Do someone know which animal was the first in develop something like
sleep in the 'life history'?
Thank you very much and excuse my bad English writing.
Hernan Lopez Schier
Facultad de Ciencias Exactas y Naturales
Universidad de Buenos Aires.
hernan at cinf.bl.fcen.uba.ar