( ( ( ( Preserved vertebrate ) or ) ( ( ( invertebrate animals ) ( -LRB- ( ( includes embryos ) -RRB- ) ) ) 3 ) ) . )
(ROOT (S (VP (VP (VB Preserved) (NP (NN vertebrate))) (CC or) (VP (VP (VB invertebrate) (NP (NNS animals))) (PRN (-LRB- -LRB-) (S (VP (VBZ includes) (NP (NNS embryos)))) (-RRB- -RRB-)) (NP (CD 3)))) (. .)))
Preserved vertebrate or invertebrate animals (includes embryos) 3.
(ROOT (S (NP (NP (NNS Invertebrates)) (-LRB- -LRB-) (CC and) (NP (JJR higher) (NNS animals)) (-RRB- -RRB-)) (VP (MD can) (ADVP (RB also)) (VP (VB be) (VP (VBN placed) (PP (IN in) (NP (NP (CD one)) (PP (IN of) (NP (CD two) (NNS groups))))) (PP (VBN based) (PP (IN on) (SBAR (WHADVP (WRB how)) (S (NP (PRP they)) (VP (VBP develop) (PP (IN as) (NP (NNS embryos))))))))))) (. .)))
Invertebrates (and higher animals) can also be placed in one of two groups based on how they develop as embryos.