 In "Amphicoelias" the is very tall, and along its side there is a prominent lamina extending from the posterior centrum to the (articular surfaces with the neural arch of the preceding vertebra).From directly behind the prezygapophyses, the (lateral processes for rib articulation) project slightly upwards and outwards, surrounded by shallow fossae and a large lamina extending up the .The neural spine is thin, with a pair of ridges going up along either side on the edges.