Paleodictyon stworek zostawia po sobie takie ślady. Niegdy nie odnaleziono go żywego ani śladów DNA po nim.
Volcanoes of the Deep Sea describes the search for a living animal that produces the Paleodictyon, using the deep-water submersible DSV Alvin near volcanic vents that lie 3,500 metres (11,500 ft) underwater in the Mid-Atlantic Ridge. They found and took samples from many of the Paleodictyon nodosum honeycomb burrows. However, no creatures were found in any of them. They theorized that the burrows were being used for cultivating/trapping bacteria by whichever creature created them.