| studies of collagen in bone and dentin matrix of a columbian mammoth (late pleistocene) of central utah. | a columbian mammoth, mammuthus columbi, was excavated at an elevation of 9000 feet in huntington canyon, emery county, utah. radiocarbon dates on the skeleton indicated death approximately 11,200 years ago. the skeleton was removed from postglacial, late quaternary, lake sediments deposited as glacial runoff approximately 9500 years ago. the bones and teeth were especially well preserved in a saturated lake bed. after excavation the bones and teeth were preserved by controlled desiccation, witho ... | 1992 | 1435514 |