Ra~

　Rowe,Timothy. 1988. Definition,Diagnosis,and Origin of Mammalia. Journal of Vertebrate Paleontology 8(3). pp241~264

　Ruta,M. & Bartels ,C. 1998. A Redescription of The Anomalocystitid Mitrate Rhenocystis latipendunculata from The Lower Devonian of Germany. Paleomtlogy 41. pp771~806