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 ...

Ammonites are a tale of two textures. The prehistoric cephalopods were composed of fleshy soft tissue (the living bit of the animals) and hard external shells, which, according to a paper published ...

Following is a transcript of the video. Narrator: A turtle's shell is as much a part of its body as our rib cage is of ours. In fact, it is their rib cage, and their spine, and their vertebrae, and ...

Researchers have solved the missing piece of a 350-year-old puzzle of how the pointed body parts of many animals grow to form their shape - including teeth, horns, claws, beaks, animal shells, and ...

Loggerhead sea turtles migrate thousands of miles through the world’s oceans, but they don’t travel solo—research shows they carry surprisingly diverse and abundant populations of tiny creatures on ...

Ammonoids, ancestors of today's octopus, squid and cuttlefish, bobbed and jetted their way through the oceans for around 340 million years beginning long before the age of the dinosaurs. If you look ...

A structure much like a liquid crystal allows the shell of a scarab beetle to circularly polarize light, scientists in the US have discovered. Mohan Srinivasarao of the Georgia Institute of Technology ...

Animals have evolved crab-like bodies at least five times throughout history, a process known as carcinization.