Helminthoida Schafhäutl, 1851

DESCRIPTION: Regular tightly constrained, closely spaced irregular to parallel meandering smooth burrows on surface of bedding. Burrows do not branch, cross over, nor interpenetrate each other.

BEHAVIOR(S): Grazing (pasichnia) trace.

ENVIRONMENTAL SETTINGS: Marine, low energy, shallow to deep water.

POSSIBLE TRACEMAKERS: Burrowing marine organisms, such as worms or vermiform organism.

GEOLOGIC RANGE: Cambrian-recent.

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