A diagram in the paper — showing interactions in terms of engineering schematics — is unlike any description of the flagellum that I’ve seen.
This technique of examining biology through the eyes of engineering is not necessarily new — systems biologists have been doing it for years.
But what about tracks of the moving animal? There are indeed some fossils from the White Sea.
One of the few features that are uncontroversial is the body size: The fossils measure usually 1-5 cm in length.
The fossilization of Kimberella specimens was most likely based on rapid burial with sand during storm events.