http://www.ucmp.berkeley.edu/annelida/annelidalh.html Life History/Ecology http://www.ucmp.berkeley.edu/annelida/annelidalh.html http://www.ucmp.berkeley.edu/annelida/annelidalh.html UC Berkeley, Museum of Paleontology, Annelids http://www.ucmp.berkeley.edu/annelida/annelidalh.html http://www.ucmp.berkeley.edu/annelida/annelidalh.html http://www.ucmp.berkeley.edu/annelida/annelidalh.html