瓜拉尼鳄(学名:Guarinisuchus)是种海生鳄类,属于森林鳄科,生存于古新世早期的巴西,约6200万年前。模式种是莫里兹瓜拉尼鳄(G. munizi)。
瓜拉尼鳄是种优势掠食动物,身长估计约为3米。瓜拉尼鳄与非洲的海生鳄类是近亲,显示这群动物起源于非洲,并在非洲、南美洲分裂之前,迁徙到南美洲[1]。
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