One of the riddles of mammal evolution is explained: the conservation of the number of trunk vertebrae. Dutch and American researchers have shown that this conservation is due to the role of speed in ...

Osteoarthritis (OA) of the spine involves the facet joints, which are located in the posterior aspect of the vertebral column and, in humans, are the only true synovial joints between adjacent spinal ...

In Panderichthids (rhipidistian fish ancestors of amphibians), 2 sets of ossifications are present in the centra region. At posterior end, below the neural arch, are pleurocentra. This element gave ...

A University of Liverpool researcher has discovered that fish can bend their spines and heads upwards, despite having different anatomy from humans and other land-dwelling vertebrates. The paper ...

On the basis of the skeleton present in the body it is of two types: 1. Exo Skeleton: The skeleton found on the exterior layer of the body and basically originates from embryonic ectoderm or mesoderm.

A researcher has discovered that fish can bend their spines and heads upwards, despite having different anatomy from humans and other land-dwelling vertebrates. A University of Liverpool researcher ...