原鳄龙属(学名:Proterochampsa)是主龙形下纲原鳄龙科的一属,生存于三叠纪晚期的阿根廷与巴西。原鳄龙的身长可达1.8到2米。P. barrionuevoi的头颅骨长44公分,身长可能达3.5米[1]。
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