Prism size and prism density in different teeth of Lambdopsalis bulla.

Average prism diameter (in μm) is measured across the narrowest dimension exposed on the surface of the prism. N, number of prisms measured. Prism density is the prism number in per mm2. d, average mutual central distance between prisms. Maximum prism density (MPD) (the greatest number of prism per mm2) is calculated following the equation: MPD = (2×106)/(d2)(3(1/2)) [53].a, standard deviation about the prism diameter.b, standard deviation about the mutual central distance between prisms.Prism size and prism density in different teeth of Lambdopsalis bulla.