Cite
MLA Citation
Brian L. Hoffman et al.. “Scanning electron microscope examination of the dental enameloid of the Cretaceous durophagous shark Ptychodus supports neoselachian classification.” Journal of paleontology, vol. 90, 2016, pp. 741–762. http://access.bl.uk/ark:/81055/vdc_100056535059.0x00003f