( ( ( Early reptiles ) and ) ( the ( amniotic egg ) ) )
(ROOT (NP (NP (RB Early) (NNS reptiles)) (CC and) (NP (DT the) (JJ amniotic) (NN egg))))
Early reptiles and                      the amniotic egg
(ROOT (S (NP (JJS Most) (NNS reptiles)) (VP (VBD lay) (NP (JJ amniotic) (NNS eggs))) (. .)))