Pterichthyodes milleri, Placoderm Pachycephalosaurus Their vertebral columns consisted of

Their vertebral columns consisted of ten neck vertebrae

This first offering if for all 6 pieces

But if you would rather forget we said that and instead reminisce on the more romantic "T

was a strange somewhat scorpion-like animal

Pterichthyodes milleri, Placoderm Pachycephalosaurus Their vertebral columns consisted ofPterichthyodes is a genus of antiarch placoderm fishes from the Devonian period. Its fossils have been discovered in Sandwich Fish Beds of Ouoyloo, Orkney Islands, Scotland. They were one of the first species recognized for what they were, as their fossils are common in the Old Red Sandstone formation studied by geologists in the early 19th century. Due to their extreme divergence from modern day fish, they were a puzzle unsolved until Charles Darwin