The researchers found that a combination of developmental and biomechanical problems prevents evolutionary change in the number of
trunk vertebrae in fast running and agile mammals.
One of the riddles of mammal evolution explained: the strong conservation of the number of
trunk vertebrae.
A left side view of the joint where the neural arch and centrum contact in
a trunk vertebra of the sauropod Spinophorosaurus nigerensis.
Not exact matches
«But it does show some pretty classic burrowing features, like low spines on the
vertebrae, and a short tail and a long
trunk.»
A: Spondylosis Deformans is usually seen in the lumbar
vertebrae (the five
vertebrae between the rib cage and the pelvis) of dogs and the thoracic
vertebrae (the small bones that form the vertebral spine in the upper
trunk) of cats.