Attributes / relations provided by
♦ 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
animaldiversity.org♦ 2Riede, Klaus (2004) Global Register of Migratory Species - from Global to Regional Scales. Final Report of the R&D-Projekt 808 05 081. 330 pages + CD-ROM
♦ 3Arctocephalus townsendi, Rebecca L. Belcher and Thomas E. Lee, Jr., MAMMALIAN SPECIES No. 700, pp. 15 (2002)
♦ 4Stenella attenuata, William F. Perrin, MAMMALIAN SPECIES No. 683, pp. 18 (2001)