"Archives". dentalcare.com. Archived from the original on 29 April 2018. Retrieved 29 April 2018.
doi.org
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nih.gov
pubmed.ncbi.nlm.nih.gov
Nweeia, Martin; Eichmiller, Frederick C.; Hauschka, Peter V.; Tyler, Ethan; Mead, James G.; Potter, Charles W.; Angnatsiak, David P.; Richard, Pierre R.; et al. (30 March 2012). "Vestigial Tooth Anatomy and Tusk Nomenclature for Monodon Monoceros". The Anatomical Record. 295 (6): 1006–1016. doi:10.1002/ar.22449. PMID22467529.
web.archive.org
"Archives". dentalcare.com. Archived from the original on 29 April 2018. Retrieved 29 April 2018.