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Tubular organism with clawed legs

spines made up of four nested elements

ornamented with minute triangular scales

or microscopic circular openings

Once reversed, walking on its barbs

dark stain as cephalic featurelessness

tentacles with hollow tube mouths

or appendages to an unknown creature

Onychophoran panarthropod affinity

distinctive foregut ancestral armature

Hallucigenia specimens inverted

underneath the lower Cambrian shales