人的綱目：靈長類的生物數學解剖 - C. E. Oxnard - 文宇宙｜Bookniverse

Following many years during which all that was available was a tooth here, a fragment of skull there, datable with little accuracy, we are now confronted, it seems almost day by day, by extensive discoveries of fossil conglomerates. They often include remnants referable to several individuals, sometimes even many fragments of the same individual, and they come from a variety of geographic sites and with a wide range of determinable dates.