Previous Article Next Article Table of Contents Science, Vol.357, No.6355, 1026-+, 2017 DOI10.1126/science.aam6036 Export Citation Identification of a primordial asteroid family constrains the original planetesimal population Delbo Marco, Walsh Kevin, Bolin Bryce, Avdellidou Chrysa, Morbidelli Alessandro Please enable JavaScript to view the comments powered by Disqus.