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Image Gallery: A Worm Missing Link

Spartobranchus tenuis

Spartobranchus tenuis in a tube

(Image credit: JB Caron)

Spartobranchus tenuis in a circular tube.

Worm Cluster

Clusters of Spartobranchus tenuis fossils.

(Image credit: JB Caron, image courtesy of the Smithsonian Institution)

Clusters of Spartobranchus tenuis. Researchers analyzed more than 9,000 fossil specimens of the worms.

Stephanie Pappas
Stephanie Pappas is a contributing writer for Live Science. She covers the world of human and animal behavior, as well as paleontology and other science topics. Stephanie has a Bachelor of Arts in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz. She has ducked under a glacier in Switzerland and poked hot lava with a stick in Hawaii. Stephanie hails from East Tennessee, the global center for salamander diversity. Follow Stephanie on Google+.