This is a Priapulid. Its informal but demonstrably more descriptive name is the penis worm.
Penis worms are kind of like this toy. If this toy had sharp teeth on its inside and wanted to eat you, that is.
This is how they move around:
There are actually around 16 species of penis worms alive today. Don't worry though, they are generally confined to the types of marine environments in which most other things can't survive.
The real time to worry about penis worms would have been 500 million years ago, during the Cambrian.
The fossil record shows that penis worms were everywhere back then.
Penis worms have been in the news this week because scientists recently used their microscopic fossil teeth to propose a new (ancient) species of penis worm.
They are also in the news because they look so damn cute, presumably.
Yay penis worms!
Science Writer, Fossil Beastmaster
Contact Alex Kasprak at email@example.com.
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