The first specimen of Camarasaurus (Dinosauria: Sauropoda) from Montana: The northernmost occurrence of the genus
Fig 30
Histology of dorsal rib from GPDM 220.
The green inset box showing greater detail of the histologic composition of this element–from the generations of secondary osteons, to vascular canal forms, to LAGs (outlined in blue). Red inset box is a higher magnification of the periosteal most portion of the outer cortex highlighting the four LAGs that constitute the EFS (marked by white arrows).
