A shell is a hard, rigid outer layer, which has evolved in a very wide variety of different animals, including mollusks, sea urchins, crustaceans, turtles and tortoises, armadillos, etc. Scientific ...

A sea turtle’s shell is living bone fused directly to its spine and ribs. It is not a detachable shield or an external case, ...

Add Yahoo as a preferred source to see more of our stories on Google. Don’t worry, animal lovers. All the birds, gators, alpacas and other critters at The Shell Factory have found new forever homes.

The fossil remains of some of the first animals with shells, ocean-dwelling creatures that measure a few centimeters in length and date to about 520 million years ago, provide a window on evolution at ...

3D printing has shown off its many different forms of use by means of helping animals, to producing a cost-efficient manufacturing process, to assisting those in the medical industry with transplants ...