Year: 1988
Type: article
Abstract: The spiral in the tusk of the narwhal has been fancifully, but never satisfactorily, explained. Spiral growths are common in the animal kingdom and share the feature of having straight axes. A curved tusk would hinder the narwhal swimming; a spiral mode of growth ensures overall straightness even if the tusk grows irregularly. The need to keep the tusk straight completely and satisfactorily explains the spiral.Key words: Monodon monoceros, dentition, morphology, asymmetry
Source: ARCTIC
DOI: 10.14430/arctic1723
Authors: Michael C.S. Kingsley, Malcolm A. Ramsay
Language: English
Subfield: Urology
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W2123777427