Paleontology. Dinosaur nostrils get a hole new look.
Stokstad
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D000489:Alligators and Crocodiles / Q000033:anatomy & histology; D000818:Animals; D001717:Birds / Q000033:anatomy & histology; D008116:Lizards / Q000033:anatomy & histology; D009666:Nose / Q000033:anatomy & histology* / Q000000981:diagnostic imaging / Q000502:physiology; D010163:Paleontology; D011859:Radiography; D012104:Reptiles / Q000033:anatomy & histology* / Q000502:physiology; D012903:Smell; D013649:Taste