This fossils are interpreted as beard worms or tube worms(Siboglinidae).
This pice here is from the lower Cambrian beds of Goerlitz in Germany.
It is still not completely clear if this fossil specimens are to be accounted to the family of the Siboglinidae. The most popular today living members of the Siboglinidae are living on the hydrotermal  vents of the deep sea, the so called “Black smoker”.

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