Attributes / relations provided by
♦ ¹Food of Northwest Atlantic Fishes and Two Common Species of Squid, Ray E. Bowman, Charles E. Stillwell, William L. Michaels, and Marvin D. Grosslein, NOAA Technical Memorandum NMFS-NE-155 (2000)
♦ ²Trophic Level and Isotopic Composition of δ13C and δ15N of Pacific Angel Shark, Squatina californica (Ayers, 1859), in the Southern Gulf of California, Mexico, O. Escobar-Sánchez, F. Galván-Magaña and L.A. Abitia-Cárdenas, Journal of Fisheries and Aquatic Science 6 (2): 141-150, 2011