''Rogerella'' is a small pouch-shaped boring (a type of

trace fossil A trace fossil, also called an ichnofossil (; ), is a fossil record of biological activity by lifeforms, but not the preserved remains of the organism itself. Trace fossils contrast with body fossils, which are the fossilized remains of part ...

) with a slit-like aperture currently produced by acrothoracican

barnacles Barnacles are arthropods of the subclass Cirripedia in the subphylum Crustacea. They are related to crabs and lobsters, with similar nauplius larvae. Barnacles are exclusively marine invertebrates; many species live in shallow and tidal water ...

. These crustaceans extrude their legs upwards through the opening for filter-feeding. They are known in the fossil record as borings in carbonate substrates (shells and hardgrounds) from the

Devonian The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...

to the Recent.

References

{{Taxonbar, from=Q7359233 Boring fossils Ichnotaxa