William A. (William Alvin) Clemens
Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan
William A. (William Alvin) Clemens · 2009
ספרייה ציבורית, Project Gutenberg. בלי הרשמה.
Sinclairella dakotensisPaleontology -- OligocenePaleontology -- Colorado -- Logan CountyPaleontology -- Nebraska -- Sioux County