( ( At ( ( the end ) ( of ( ( the ( Paleozoic era ) ) ( -LRB- ( ( ( ( 250 million ) years ) ago ) -RRB- ) ) ) ) ) ) ( , ( ( plate movements ) ( ( ( ( brought ( all ( land masses ) ) ) together ) ( into ( ( a super-continent ) ( called Pangaea ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (NP (DT the) (NN end)) (PP (IN of) (NP (NP (DT the) (JJ Paleozoic) (NN era)) (PRN (-LRB- -LRB-) (ADVP (NP (QP (CD 250) (CD million)) (NNS years)) (RB ago)) (-RRB- -RRB-)))))) (, ,) (NP (NN plate) (NNS movements)) (VP (VBD brought) (NP (DT all) (NN land) (NNS masses)) (ADVP (RB together)) (PP (IN into) (NP (NP (DT a) (NN super-continent)) (VP (VBN called) (NP (NNP Pangaea)))))) (. .)))
At the end of the Paleozoic era (250 million years ago), plate movements brought all land masses together into a super-continent called Pangaea.
(ROOT (S (NP (NNP Pangaea)) (VP (VBD began) (S (VP (VBG breaking) (ADVP (RB apart)) (ADVP (NP (QP (CD 250) (CD million)) (NNS years)) (RB ago))))) (. .)))