Orbital orientation is not visual orientation: a comment on "X-ray Vision and the evolution of forward-facing eyes" by M.A. Changizi and S. Shimojo.
Howland
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D000818:Animals; D005075:Biological Evolution; D005123:Eye / Q000033:anatomy & histology*; D005403:Fixation, Ocular / Q000502:physiology; D009915:Orbit / Q000033:anatomy & histology*; D009949:Orientation; D015348:Vision, Binocular / Q000502:physiology