Distribution of centrum length (CL) in YPM sample of Palaeopython cadurcensis, Phosphoroboa filholii comb. nov., and “Palaeopython” neglectus (frequency counts on right axis). Superimposed is the relationship between dentary tooth row length and mid-trunk vertebral centrum length (CL) in extant Constrictores (dentary size on left axis). Centrum length indicated by the dentary YPM-VPPU 30397 from the same collection and dentary tooth row length indicated by the population mean of Phosphoroboa filholii comb. nov. mid-trunk vertebrae support the referral of the dentary to Phosphoroboa filholii comb. nov.