( ( ( The bony ) ( ( covering , ) often ) ) ( ( ( ( fused ( to ( the ribs ) ) ) , ) ( on ( ( ( the upper ) and ) ( ( lower surfaces ) ( of ( ( the body ) ( of ( a turtle ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN bony)) (VP (VBG covering) (, ,) (ADVP (RB often)))) (VP (VBD fused) (PP (TO to) (NP (DT the) (NNS ribs))) (, ,) (PP (IN on) (NP (NP (DT the) (JJ upper)) (CC and) (NP (NP (JJR lower) (NNS surfaces)) (PP (IN of) (NP (NP (DT the) (NN body)) (PP (IN of) (NP (DT a) (NN turtle))))))))) (. .)))
The bony covering, often fused to the ribs, on the upper and lower surfaces of the body of a turtle.
(ROOT (S (NP (JJS Most) (NN turtle) (NNS bodies)) (VP (VBP are) (VP (VBN covered) (PP (IN by) (NP (NP (DT a) (JJ special) (NN bony) (CC or) (NNS cartilaginous) (NN shell)) (VP (VBN developed) (PP (IN from) (NP (PRP$ their) (NNS ribs)))))))) (. .)))