Carpenter originally described the cervical (neck) spines and caudal plates as belonging to a single row on each side, although more recently he and Jim Kirkland reconstructed them in two parallel rows on each side, one above the other.
Carpenter je isprva opisao vratne bodlje i repne ploče kao u jednom redu s obje strane tijela, ali nedavno su ih on i Jim Kirkland rekonstruirali u dva paralelna reda na bokovima, jedan iznad drugog.