In most creatures with backbones, vertebrae replace the notochord in the embryonic stage of development. But the coelacanth has no fully formed vertebrae, and so the notochord provides its ...

Now, a new study from the Stazione Zoologica Anton Dohrn in Italy and the University of Exeter in the U.K. has found that ...

Malie Mason (Krysteena)Katarina Hughes (Grosky)Marc Winnick (Mr. Flannagan)Marc Fajardo (Thwarp) Notochord Cove is a picture perfect town, expect no one has a spinal structure or a nervous system ...

The evolutionary precursor to the backbone, the notochord is a fine, flexible chord defining the body axis in the early embryos of all vertebrates. In certain breeds of dogs, notochord cells ...

New CT scan study shows ancient jawless fish used mouth structures for filter feeding, challenging traditional ideas of ...

High levels of plastic pollution can kill the embryos of a wide range of ocean animals, new research shows. Scientists tested ...

Plastic pollution poses a threat to an incredible diversity of marine life by disrupting the balance of ocean ecosystems and ...

Fishy yet not a fish, Pikaia possessed a flexible rod of cartilage, called a notochord, which in vertebrates develops into a spine. “All vertebrates have probably evolved from something like ...

Fossils found in the Burgess Shale of British Columbia show traces of a notochord (a rodlike primitive backbone), a significant step in the evolution of vertebrates. Cambrian sediments found in ...

Many four-legged animals go through embryonic stages that have similar features -- gill arches, a notochord, segmentation, and paddle-like limb buds -- as they develop into different adults.

This element gave rise to the centrum in amniotes. At anterior end, below the notochord, is the intercentrum. Ichthyostegids (labyrinthodont amphibians) had vertebrae nearly identical with ...