( ( ( ( ( The ( Polyceridae family ) ) ( is ( classified ( within ( the ( clade Doridacea ) ) ) ) ) ) , ) ( itself ( ( ( belonging ( to ( the ( clade Euctenidiacea ) ) ) ) ( within ( the ( clade Nudipleura ) ) ) ) ( -LRB- ( ( according ( to ( ( the taxonomy ) ( of ( ( the Gastropoda ) ( by ( ( ( ( Bouchet & ) Rocroi ) , ) 2005 ) ) ) ) ) ) ) -RRB- ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NNP Polyceridae) (NN family)) (VP (VBZ is) (VP (VBN classified) (PP (IN within) (NP (DT the) (JJ clade) (NN Doridacea)))))) (, ,) (S (NP (PRP itself)) (VP (VBG belonging) (PP (TO to) (NP (DT the) (JJ clade) (NN Euctenidiacea))) (PP (IN within) (NP (DT the) (JJ clade) (NN Nudipleura))) (PRN (-LRB- -LRB-) (PP (VBG according) (PP (TO to) (NP (NP (DT the) (NN taxonomy)) (PP (IN of) (NP (NP (DT the) (NNP Gastropoda)) (PP (IN by) (NP (NNP Bouchet) (CC &) (NNP Rocroi) (, ,) (CD 2005)))))))) (-RRB- -RRB-)))) (. .)))
The Polyceridae family is classified within the clade Doridacea, itself belonging to the clade Euctenidiacea within the clade Nudipleura (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
(ROOT (S (NP (DT A) (NN clade)) (VP (VBZ is) (NP (NP (CD one) (NN way)) (PP (IN of) (NP (VBG classifying) (NNS organisms))))) (. .)))