(S (S (BASENP (JJ Current) (NNS fossils) (CC and) (NN research)) (VP (VBP say) (SBAR (IN that) (S (NP (NP (BASENP (DT the) (JJ evolutionary) (NN split)) (PP (IN from) (BASENP (NNS apes)))) (PP (TO to) (BASENP (NNS humans)))) (VP (VBD occurred) (ADVP (NP (QP (ADVP (IN at) (JJS least)) (BASENP (NN eight) (NN million))) (NNS years)) (RB ago))))))) (PERIOD .))