TRAIT GHOSTS. “It is undeniable that some shared ancestral traits have been conserved long after their initial adaptive significance has vanished.”
http://aob.oxfordjournals.org/content/85/4/411.full.pdf
TRAIT GHOSTS. “It is undeniable that some shared ancestral traits have been conserved long after their initial adaptive significance has vanished.”
http://aob.oxfordjournals.org/content/85/4/411.full.pdf