LOS ANGELES (CBSNewYork/AP) — Dr. Seuss’ The Lorax had a bountiful box office opening, earning $70.7 million in its first weekend to score the biggest debut of the year.

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The Lorax is based on Seuss’ cautionary fable about the importance of preserving the environment.

The 3-D animated family film from Universal Pictures features the voices of Danny DeVito, Zac Efron and Betty White. Also starring in a lead role is Taylor Swift.

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Of its opening haul, $5.4 million, or 8 percent, came from IMAX screens, which is on the high side for a family film.

Coming in second place with a strong debut was the R-rated comedy “Project X,” about a trio of high school misfits who throw a raging party in hopes of becoming popular. The Warner Bros. film made nearly $21 million.

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