( ( ( Cambrian ( ( environment ( -LRB- ( ( sedimentary rock ) -RRB- ) ) ) ( more conducive ) ) ) ( to ( preserving fossils ) ) ) ; )
(ROOT (S (VP (VBG Cambrian) (NP (NP (NN environment)) (PRN (-LRB- -LRB-) (NP (JJ sedimentary) (NN rock)) (-RRB- -RRB-)) (ADJP (RBR more) (JJ conducive))) (PP (TO to) (S (VP (VBG preserving) (NP (NNS fossils)))))) (: ;)))
Cambrian environment (sedimentary rock) more conducive to preserving fossils;
(ROOT (S (NP (JJS Most) (NNS fossils)) (VP (VBP are) (VP (VBN found) (PP (IN in) (NP (JJ sedimentary) (NNS rocks))) (SBAR (IN because) (S (NP (NNS organisms)) (VP (MD can) (VP (VB be) (VP (VBN preserved) (PP (IN in) (NP (JJ sedimentary) (NN rock)))))))))) (. .)))