When A 400 Million Year Old Gigantic Extinct Monster Worm Was Discovered In Canadian Museum

Eddie Gonzales Jr. – AncientPages.com – One can imagine how astonished scientists were when they found the remains of a previously undiscovered species of an extinct primordial giant worm with terrifying snapping jaws hidden in a museum.

Compared to today’s worms, this one is huge and frightening. The discovery was made by researchers from the University of Bristol, Lund University in Sweden, and the Royal Ontario Museum, who studied an ancient fossil that has been stored at the museum since the mid-1990s. Suddenly the science team came across the remains of a giant extinct bristle worm (the marine relatives of earthworms and leeches).

When A 400 Million Year Old Gigantic Extinct Monster Worm Was Discovered In Canadian Museum

Artistic reconstruction showing W. armstrongi attacking a fish in the Devonian sea. Credit: James Ormiston

The new species is unique among fossil worms and possessed the largest jaws ever recorded in this type of creature, reaching over one centimetre in length and easily visible to the naked eye. Typically, such fossil jaws are only a few millimetres in size and need to be studied using microscopes.

Despite being only knows from the jaws, comparison with living species suggests that this animal achieved a body length in excess of a metre.

This is comparable to that of ‘giant eunicid’ species, colloquially referred to as ‘Bobbit worms’ which are fearsome and opportunistic ambush predators, using their powerful jaws to capture prey such as fish and cephalopods (squids and octopuses) and dragging them into their burrows.

“Gigantism in animals is an alluring and ecologically important trait, usually ᴀssociated with advantages and compeтιтive dominance,” lead author Mats Eriksson from Lund University said.

“It is, however, a poorly understood phenomenon among marine worms and has never before been demonstrated in a fossil species.

“The new species demonstrates a unique case of polychaete gigantism in the Palaeozoic, some 400 million years ago.”

“It also shows that gigantism in jaw-bearing polychaetes was restricted to one particular evolutionary clade within the Eunicida and has evolved many times in different species,” co-author Luke Parry from the University of Bristol’s School of Earth Sciences, added.

When A 400 Million Year Old Gigantic Extinct Monster Worm Was Discovered In Canadian Museum

A 3-D reconstruction of parts of the jaw apparatus of W. armstrongi from CT scanning of the fossil specimens. Credit: Luke Parry

The specimens were collected over the course of a few hours in a single day in June 1994, when Derek K Armstrong of Ontario Geological Survey was dropped by helicopter to investigate the rocks and fossils at a remote and temporary exposure in Ontario.

Sample materials from what proved to belong to the Devonian Kwataboahegan Formation were brought back to the Royal Ontario Museum, where they were stored until they caught the eyes of the authors.

“This is an excellent example of the importance of looking in remote and unexplored areas for finding new exciting things, but also the importance of scrutinizing museum collections for overlooked gems,” David Rudkin from the museum said.

When A 400 Million Year Old Gigantic Extinct Monster Worm Was Discovered In Canadian Museum

The holotype of Websteroprion armstrongi. Credit: Luke Parry

The species has been named Websteroprion armstrongi. This honors Armstrong, who collected the material, and bᴀss player extraordinaire, Alex Webster of the Death Metal band Cannibal Corpse, since he can be regarded as a ‘giant’ when it comes to handling his instrument.

Luke Parry added: “This is fitting also since, beside our appeтιтe for evolution and paleontology, all three authors have a profound interest in music and are keen hobby musicians.”

The study was published Scientific Reports

Written by Eddie Gonzales Jr. – AncientPages.com – MessageToEagle.com Staff

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