New species of gigantic, toothy worm identified in Canadian fossil collection

Scientists have discovered a new species of a giganticprehistoric worm.

This new species, calledWebsteroprion armstrongi named after bassist Alex Webster of the death metal band Cannibal Corpse is closely related to earthworms and leeches.

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The worm was studied by researchers from the University of Bristol, Lund University in Sweden and the Royal Ontario Museum in Toronto. The specimen was found southeast ofMoosonee, Ont., in the Hudson Bay basin in 1994 andhad been in the ROM's collection since then but hadn't been closely studied until recently.

Their findings were reported in the journal Scientific Reports.

It is a very mean worm.- Sebastian Kvist, Royal Ontario Museum

Websteroprionarmstrongi, which belongs to theEunicida family, is like something out of a science fiction film. Measuring between one to two metres, it would burrow deep under the sediment of the ocean floor. But you'd hardly notice it: the only thing remaining above ground were its jaws, waiting for unsuspecting prey.

While it was a very long worm, its jaw structure was a mere one centimetre in length. However, it isthe longest jaw ever recorded for the species.

"It's a very long and slender worm," said SebastionKvist, curator of invertebrates at the ROM. "So, a centimetre is actually quite big for jaws. Normally, the jaws that they find in bedrockare only a couple of millimetres."

The jaws spread out perpendicular to the body and then snap shut. The worm then pullsits meal down into the burrow.

"It is a very mean worm," Kvist said.

There are worms around today that resemble theWebsteroprion armstrongi(see video below).

But this specimen is the oldest example of the species found so far.

The finding is a significant for understanding the early history of our planet.

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"It's the oldest fossil of we know of this particular family," Kvist said."The finding extends the range of time that these organisms have been present on Earth, and it allows us to better understand the ecology that was present at this age."

These "Bobbitt worms," as the Eunicida worms are informally called in a cheeky nod to Lorena Bobbitt, a U.S. woman who cut off her husband's penis while he slept in 1993, are found in warmer ocean waters in the Indo-Pacific region and in parts of the Atlantic Ocean.

In many regions, they are used as bait, and inthe Pacific Islands, they are considered a delicacy to be eaten.