Cervical Vertebra
Irregular bone, part of the core axial skeleton
Also known as: Neck Bone
Classification
Irregular bone, part of the core axial skeleton
Dimensions
Neck bones vary wildly in size depending on the animal, ranging from tiny, delicate rings in small rodents to massive, broad blocks in large mammals like moose or horses.
Key Features
This specimen features a distinctive U-shaped notch at the top end, a tapered body shape, and a central opening running through the face of the bone, giving it a somewhat heart-like or triangular silhouette.
Similar Bones
Can be confused with small wedge-shaped fragments of skull plates or pelvic bones, but the presence of the hollow central channel and symmetrical notches helps separate neck bones from flat skull pieces.
Across Species
In giraffes, these bones are enormously elongated to reach high foliage, yet they maintain the exact same seven-bone count found in almost all mammals, including humans and mice. Whales have compressed neck bones that are often fused together to streamline their hydrodynamic body for swimming.
Evolutionary History
Neck bones evolved from the repeating segmented backbone of early fish-like ancestors, eventually specializing as land animals lifted their bodies off the ground and required flexible head movement to spot predators and forage.
Photography Tips
Place the bone flat against a solid, contrasting background with soft, natural side-lighting to highlight the texture and depth of the central hole. Include a coin or ruler next to the bone for clear scale.