Measurements and ratios for extant Pristis spp. and rostra from the Urumaco sequence.
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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.
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2015-12-03



