Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan

"Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan" by William Alvin Clemens is a scientific study from the early 1960s that closely analyzes fossils from the Apatemyidae family, especially the Sinclairella genus, revealing key geological and evolutionary insights from specific periods. By carefully documenting and comparing teeth and skeletal pieces of Sinclairella dakotensis found in South Dakota, Nebraska, and Colorado, Clemens expands our understanding of Apatemyidae's history. The examination of the fossils' forms and where they were discovered helps to create links between different locations and broadens the geographic and time frame in which this family lived, adding important information to the study of ancient life.