(Table 1) Age determination of Ceratoporella nicholsoni specimens of the Caribbean Sea@en

DISTANCE [cm] is the distance from rim. For each specimen the first value represents the age of the outermost layer of the skeleton, taken as equal to the sampling year. Sample Pb19-14C is the radiocarbon bomb spike fit described in the text. Distance from rim was measured along the growth axis. Year A.D. is calculated from the age and the year of the measurements (varying from 1997 to 2001 A.D.). Uncertainties of the U-Th dates are internal errors (2 sd) except for sample Ce96-4'. For this sample multiple analyses (n = 5) give an error of about 4% (2sem).【距离（单位：厘米）】指距骨骼边缘的距离。对于每份标本，首个数值代表骨骼最外层的形成年代，其取值等同于采样年份。样品Pb19-14C为正文中所述的放射性碳炸弹峰（radiocarbon bomb spike）拟合结果。边缘距离沿生长轴进行测量。公元年份由测年结果与测量年份（测量年份范围为公元1997年至2001年）计算得出。铀钍测年（Uranium-thorium dating）结果的不确定度为内部误差（2倍标准偏差，2 sd），样品Ce96-4'除外。对于该样品，5次重复分析（n=5）得到的误差约为4%（2倍标准误，2sem）。