Late Cenozoic porcupines (Mammalia, Erethizontidae) of North America. American Museum novitates ; no. 2421

White, John A. (John Anderson), 1919-2005-10-062005-10-061970http://hdl.handle.net/2246/263115 p. : ill. ; 24 cm.Includes bibliographical references (p. 14-15).1148824 bytesapplication/pdfen-USQL1 .A436 no.2421, 1970Porcupines, Fossil -- United States.Porcupines, Fossil -- Mexico.Erethizontidae -- United States.Erethizontidae -- Mexico.Mammals, Fossil -- United States.Mammals, Fossil -- Mexico.Paleontology -- Cenozoic -- United States.Paleontology -- Cenozoic -- Mexico.Paleontology -- United States.Paleontology -- Mexico.Late Cenozoic porcupines (Mammalia, Erethizontidae) of North America. American Museum novitates ; no. 2421text