( ( ( ( ( Lampreys ( have ( no ( body scales ) ) ) ) , ) and ) ( ( on ( the inside ) ) ( they ( have ( ( a ( ( poorly developed ) skeleton ) ) ( of cartilage ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Lampreys)) (VP (VBP have) (NP (DT no) (NN body) (NNS scales)))) (, ,) (CC and) (S (PP (IN on) (NP (DT the) (NN inside))) (NP (PRP they)) (VP (VBP have) (NP (NP (DT a) (ADJP (RB poorly) (JJ developed)) (NN skeleton)) (PP (IN of) (NP (NN cartilage)))))) (. .)))
Lampreys have no body scales, and on the inside they have a poorly developed skeleton of cartilage.
(ROOT (S (ADVP (RB Early) (PP (IN in) (NP (NP (DT the) (NN development)) (PP (IN of) (NP (DT a) (JJ human) (NN fetus)))))) (, ,) (NP (DT the) (NN skeleton)) (VP (VBZ is) (VP (VBN made) (ADVP (RB entirely)) (PP (IN of) (NP (NN cartilage))))) (. .)))