An illustrated atlas of the vertebral morphology of extant non-caenophidian snakes, with special emphasis on the cloacal and caudal portions of the column Author Szyndlar, Zbigniew Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, 31 - 016 Krakow, Poland Author Georgalis, Georgios L. https://orcid.org/0000-0001-7759-6146 Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, 31 - 016 Krakow, Poland dimetrodon82@gmail.com text Vertebrate Zoology 2023 2023-09-27 73 717 886 http://dx.doi.org/10.3897/vz.73.e101372 journal article http://dx.doi.org/10.3897/vz.73.e101372 2625-8498-73-717 8F3D5EDA2F184E5CA53E2F7741FF1339 318B657A15AB5708B3C35FC1A82B4945 Bolyeria Gray, 1842 Material examined. Bolyeria multocarinata ( Boie H in Boie F, 1827) (UMMZ 190727). Description (Fig. 57). Trunk vertebrae . Only two mid-trunk vertebrae were examined. Centrum shorter than wide; cotyle and condyle orbicular; distinct subcotylar tubercles present; neural arch moderately vaulted; posterior median notch of the neural arch deep; neural spine as high as long, with distinct anterodorsal and posterodorsal projections; prezygapophyseal accessory processes long; hypapophyses sigmoidal, present throughout the column; paracotylar foramina present. Figure 57. Bolyeriidae : Bolyeria multocarinata (UMMZ 190727), two trunk vertebrae. Trunk / caudal transition . Unknown. Number of vertebrae . Data from literature: Bolyeria multocarinata : 198 trunk vertebrae plus 87 cloacal and caudal vertebrae ( Hoffstetter 1960 ).