Unusually, the front end of the third cervical is set slightly higher than the back end, which is not seen in any other cervical vertebrae. Vertebrae from further back in the neck have a greater angle between the elongate articular processes known as the postzygapophyses, and also more elongate transverse processes. On the transverse processes, there are further articular processes – the rounded parapophyses and rod-like diapophyses – are located. In the rearmost cervicals, there is also a deep depression separating the postzygapophyses, and the neural spines have steeply-angled front margins, which has the effect of creating prominent spike-like projections. The first few dorsal vertebrae are similar to the cervical vertebrae, but have taller and more prong-like neural spines. The rest are amphiplatyan, meaning that they are flat at both ends. They also have postzygapophyses which are less elongate and more pedestal-like, in addition to taller and more rectangular neural spines. The parapophyses, which are depressions instead of projections, have moved off from the transverse processes to the neural arch, between the transverse processes and the articular processes known as the prezygapophyses at the front of the vertebrae. However, they move back onto the base of the transverse processes in the last few dorsals. In the third or fourth dorsal, the parapophysis is located very close to the suture between the neural spine and the centrum, which is unlike the other dorsals but similar to the first few dorsals in "Edmontosaurus". Also like "Edmontosaurus", the median ridge separating the prezygapophyses become more pronounced in the rear dorsals. Among the "Eolambia" specimens found to date, the best-preserved sacrum includes seven vertebrae. Given that this individual is immature, and hadrosaurs increase their sacral vertebra count with age, adults may have had more sacrals. The caudal (tail) vertebrae are amphicoelous, having both the front and back ends being concave. They have pedestal-like prezygapophyses and tab-like postzygapophyses, the latter of which are separated by a depression. The prezygapophyses lengthen to become stalks and the postzygapophyses shrink in the middle and rear caudals.