The North American River Otter Lontra canadensis as a Late Pleistocene Fossil from the Canadian River, Oklahoma

Abstract

A well-preserved left lower jaw of Lontra canadensis found in sands of the Canadian
River in east-central Oklahoma provides the first fossil record of the species in Oklahoma. When subjected to pretreatment in advance of radiometric dating, the canine root extracted from the jaw did not preserve enough collagen to be datable. However, its preservation suggests a late Pleistocene or possibly early Holocene age.