Silodrid

The Silodrid is a species that evolved on Zorvalgia 530 million Earth-years ago.

Physical Characteristics
Silodrids have a jagged, sharp shell-like body with thorn-like protrusions distributed unevenly. They lack legs; instead the underside is covered in a layer of cilia that allow it to slide along the ground. The location and quantity of eyes and mouths varies. Generally the shell is a mottled mixture of white and gray.