单窗孔类(学名:Monofenestrata)是翼龙目的一个演化支,包含悟空翼龙科、翼手龙亚目[1]。已知最古老的单窗孔类是尖头翼龙(Cuspicephalus),化石发现于英国的司东费尔德板岩组(Stonesfield Slate formation),地质年带约为1亿6600万年前,相当于侏㑩纪中期的巴通阶[2]。
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