To confirm previous findings that hybridization of Caribbean acroporid corals occurred in the recent geologic past, we determined the uranium-thorium (U-Th) ages of two subfossil Acropora prolifera samples collected from nearshore coral death assemblages located off the coast of southeastern Florida. Our results indicate that A, prolifera existed in southeastern Florida during the late Holocene, confirming that Caribbean acroporid hybridization occurred prior to their region-wide die off in the 1970s and 1980s.

中文翻译：

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全新世时期Acropora prolifera（Lamarck，1816）菌落的U-Th约会证实珊瑚杂交不是最近的现象。

为了确认以前在最近的地质历史中发生的加勒比棘孢珊瑚杂交的先前发现，我们确定了从佛罗里达州东南沿海的近岸珊瑚死亡组合中收集的两个亚化石Acropora prolifera样品的铀-（U-Th）年龄。我们的结果表明，在全新世晚期，佛罗里达州东南部存在A，prolifera，这证实了加勒比地区的杂种优势在1970年代和1980年代灭绝之前就已经发生了。