The Late Precambrian fossil Kimberella is a mollusc-like bilaterian organism

More than 35 White Sea Kimberella specimens document a bilaterally symmetrical benthic body with a broad foot-like region and a non-mineralized dorsal cover; resemblance to molluscs is a bounded interpretation, not crown membership or a preserved radula.

Kimberella quadrata shows mollusc-like characters in the White Sea sample, but the profile does not assign crown-Mollusca membership or direct ancestry.

The profile is restricted to the cited White Sea assemblage and does not treat it as the complete distribution of Kimberella.

A mobile benthic feeding mode is inferred from body form and associated surfaces; diet and a radular feeding mechanism are not directly preserved.

More than 35 specimens document a bilateral body, broad foot-like region and non-mineralized dorsal cover.

The 558–555 Ma envelope represents the cited White Sea sample, not a global species duration or molluscan first appearance.

The 558–0 Ma Mollusca display is a navigation envelope anchored at its old end by White Sea Kimberella morphology and at its young end by living molluscs; it is not a crown-Mollusca origin, a continuous fossil record or a direct-ancestor claim.

The molluscan-origin dossier is a navigation route through contested Kimberella affinity and the Orthrozanclus character mosaic; it does not define crown Mollusca, a direct ancestor chain or a global origin date.