FIGURE 3. ETMNH 3857, Ambystoma sp. first trunk vertebra in (1) dorsal, (2) ventral, (3) left lateral, and (4) anterior views. Osteological abbreviations: Dp, diapopohysis, NotC, notochordal canal; Pozyg, postzygapophysis; Pp, parapopohysis; Przyg, prezygapopohysis.