Thomas E. Sniegoski said this quote

The organism - there was no other thing she could think to call it - churned and moved as it propelled itself across the ground, the living bodies of animals briefly appearing before being submerged in a sea of bugs as others rose to the surface. And then there were the bones. At first she didn't quite understand what she was seeing. For a moment she believed that they were pieces of wood - limbs of trees picked up by the undulating mass - but when she saw the skull, its jaw hanging open in a silent scream, she understood the horror of what it was. the remains of victims were a part of its body, flowing within the multitude that made up its mass.