Add Yahoo as a preferred source to see more of our stories on Google. The newly discovered species of priapulid, Kraytdraco spectatus, got its name from a Star Wars monster. Illustration by Rhydian ...

A study on the development of priapulids or ‘penis’ worms throws doubt on a feature that has been thought for more than 100 years to define the largest branch of the animal tree of life. Members of ...

Fifty years ago, researchers placed a mystery worm in a 'wastebasket' genus and interest in the lowly critter waned -- until now. When a partial fossil specimen of a primordial marine worm was ...

The Grand Canyon is one of the most remarkable landforms in America, attracting millions of tourists each year. The geological marvel reveals the power of erosion over long periods of time. It is also ...

A strange, forgotten worm that perplexed scientists 50 years ago is finally getting a name and the attention it's due. Meet Utahscolex ratcliffei. Scientists came up with the name after investigating ...

An orca calf and adult swim in the Norwegian fjords. Orcas have been among the most popular subjects of social media videos. They have been filmed ramming into boats (possibly playing) and hunting ...

This is a priapulid, otherwise known as a “penis worm,” and if you click the video, you’ll understand how it earned that phallic moniker. These creatures are currently shaking the branches of the ...

Scientists have revealed new findings on the evolutionary relationships and structure of priapulids -- a group of carnivorous mud-dwelling worms living in shallow marine waters. Scientists from the ...

Hermit crabs move into other animals’ discarded shells as shelter, because the ocean is a treacherous place, full of hungry predators. Half a billion years ago, another creature evolved the same ...

Dentists have uncovered the terrifying truth behind a super-creepy ancient creature called the 'Penis Worm'. This bizarre flesh-eating beastie turned its mouth inside out and then pulled itself along ...

LAWRENCE -- When a partial fossil specimen of a primordial marine worm was unearthed in Utah in 1969, scientists had a tough go identifying it. Usually, such worms are recognized and categorized by ...