This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Polacanthus fossils. PLATE Fig Lateral view of fragment of the tail sheathed by haemal and neural keeled scutes between which are the remains of lateral series of small peltate scute tubercles The vertebral centra c' are overlaid by bundles of ossified tendons Fig Sectional view of the fractured surface at c' Crushed centrum hh