title: The pineal gland and geographical distribution of animals.
mesh_terms: D000663:Amphibians / Q000033:anatomy & histology; D000818:Animals; D001717:Birds / Q000033:anatomy & histology; D005399:Fishes / Q000033:anatomy & histology; D005843:Geography; D008116:Lizards / Q000033:anatomy & histology*; D010870:Pineal Gland / Q000033:anatomy & histology*; D013045:Species Specificity