The evolution of the sea star, sea urchin, and other echinoderms’ body shape during the Cambrian and Ordovician periods was faster and more dramatic than their ecological innovation, according to a ...

Imagine you are drawing a starfish—where would you draw its face? Starfish have eyes at the tip of each of their arms, but the location of their heads has puzzled scientists for decades.

Despite the absence of a current day analogue (echinoderms have since evolved to include modern day starfish and sea urchins), pleurocystitids have been of interest to paleontologists due to their ...

Researchers have discovered a fossil of the earliest starfish-like animal, which helps us understand the origins of the nimble-armed creature. Researchers from the University of Cambridge have ...

The spiky-limbed creatures saw their doom approaching, but could do nothing to stop it. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

How humans evolved from the very first animals over the last 600 million years is an endlessly fascinating question. When piecing together the many steps leading from our first simple animal ancestor ...

After four years of digging for fossils in a churchyard in York, Pennsylvania, amateur paleontologist Chris Haefner made an intriguing find. “I knew it was worth keeping,” he said. He posted his ...

Chapter 1. The fossil record of parasitism: Its extent and taphonomic constraints -- Chapter 2. Importance of data on fossil symbioses for parasite-host evolution -- Chapter 3. Biodiversity and ...

How humans evolved from the very first animals over the last 600 million years is an endlessly fascinating question. When piecing together the many steps leading from our first simple animal ancestor ...

PITTSBURGH—Researchers in the Department of Mechanical Engineering at Carnegie Mellon University, in collaboration with paleontologists from Spain and Poland, used fossil evidence to engineer a soft ...