Fig. 43From: Taxonomic revision of the snakes of the genera Palaeopython and Paleryx (Serpentes, Constrictores) from the Paleogene of EuropeVaulting ratio in anterior, mid- and posterior trunk vertebrae in the YPM sample of “Palaeopython” neglectus compared to same ratio in type material of various Paleogene constrictors from Europe. Only two posterior trunk vertebrae of “Palaeopython” neglectus are known, and they show very different vaulting ratios, one of which falls in the distribution of Phosphoroboa filholii comb. nov. Without a larger sample, the significance of this is unknown. Two types are plotted for Paleryx depressus (junior synonym of Paleryx rhombifer) because one vertebra is close to the mid-/posterior trunk boundary, and moving it to the one or the other column would be misleadingBack to article page