haemal arch การใช้

The tail has haemal arches, a feature lost in all other modern turtles.
It consists of five tail vertebrae, a sacral vertebra, a left humerus, haemal arches and rib fragments.
It includes a partial anterior cervical vertebra, multiple caudal vertebrae and five haemal arches, a nearly complete pelvis, and the left femur.
In the tail, these are attached to chevron-shaped bones called "'haemal arches "', which attach below the base of the spine, and help to support the musculature.
The haemal arches possess a unique morphology, where only the ninth pair and onwards are fused distally, however unlike other diapsids they are not V-or Y-shaped in cranial view, but U-shaped.