It started when University of Michigan paleontologist Philip Gingerich went to Pakistan in 1977 in search of Eocene land mammals, visiting an area previously reported to shelter such remains.

• 事情得从密西根大学古生物学家金格瑞西（PhilipGingerich）到巴基斯坦去寻找始新世陆栖哺乳类说起。