posted on 2015-10-21, 03:50authored byJorge D. Carrillo-Briceño, Erin Maxwell, Orangel A. Aguilera, Rodolfo Sánchez, Marcelo R. Sánchez-Villagra
Data from Whitty et al. [49], except P. pectinata ratios which are from 14 individuals listed in Robillard and Séret [116], and P. atlanticus (rostral spine estimate from Casier [108]; measurement data from Zbyszewski [117]).
*Estimate based on doubling the width of the preserved half.
DS = sum of the distal and next most distal interalveolar ratios from the right and left sides; DPS score = ratio between the spacing of the most anterior two and most posterior two rostral spines; SRL = standard rostral length; SRW = standard rostral width; TRL = total rostral length; TW = tip width
† = extinct taxon.
Measurements and ratios for extant Pristis spp. and rostra from the Urumaco sequence.