Attributes / relations provided by
♦ 1Thorny Skate, Amblyraja radiata,
Life History and Habitat Characteristics, David B. Packer, Christine A. Zetlin, and Joseph J. Vitaliano, NOAA Technical Memorandum NMFS-NE-178 (2003)
♦ 2Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 3Smooth Skate, Malacoraja senta,
Life History and Habitat Characteristics, David B. Packer, Christine A. Zetlin, and Joseph J. Vitaliano, NOAA Technical Memorandum NMFS-NE-177 (2003)