About KOCH P L
About Univ. Michigan, MI, USA
About FISHER D C
About Univ. Michigan, MI, USA
About DETTMAN D
About Univ. Michigan, MI, USA
About Geology
About Proboscidea
About Cenozoic
About 絶滅
About 長鼻類
About 酸素同位体
About 死
About 季節
About 季節性
About 尺度