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来自维基百科,自由的百科全书
楔齿龙属(属名:Sphenacodon)属于盘龙目楔齿龙科,楔齿龙科是兽孔目的近亲。楔齿龙身长约3米,生存于早二叠纪的北美洲,尤其是德州与新墨西哥。
楔齿龙的脊椎神经棘很长,可能作为大量的背部肌肉附着用,使得楔齿龙可用力地扑向猎物。虽然楔齿龙的脊椎神经棘很长,但它们没有异齿龙的帆状物。楔齿龙、异齿龙与其他楔齿龙类有接近亲缘关系。楔齿龙的颌部厚重、牙齿健壮,具有长的犬齿与切割用牙齿,显示它们是肉食性动物[1]。
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