''Palaeoconchus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

microconchid The order Microconchida is a group of small, spirally-coiled, encrusting fossil "worm" tubes from the class Tentaculita found from the Upper Ordovician to the Middle Jurassic (Bathonian) around the world. They have lamellar calcitic shells, ...

tubeworms. Their tubes have pseudopunctae penetrating the tube wall. Tubes lumen is smooth. ''Palaeoconchus'' occurs in the Late Ordovician of Baltica and Avalonia. In the

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ...

it had a global distribution.

References

{{Taxonbar, from=Q16987152 Protostome enigmatic taxa Tentaculita Ordovician invertebrates Silurian animals Devonian animals Late Devonian animals Devonian animals of Europe Late Ordovician first appearances Devonian extinctions