''Chalazoscolex'' is a genus of

palaeoscolecid The palaeoscolecids are a group of extinct ecdysozoan worms resembling armoured priapulids. They are known from the Lower Cambrian to the lower Ludfordian (late Silurian); they are mainly found as disarticulated sclerites, but are also preserved ...

ian worm known from the

Sirius Passet Sirius Passet is a Cambrian Lagerstätte in Peary Land, Greenland. The Sirius Passet Lagerstätte was named after the Slædepatruljen Sirius, Sirius sledge patrol that operates in North Greenland. It comprises six places in Nansen Land, on the eas ...

. It had around 140 segments, each adorned with two rows of palaeoscolecid plates. Its body was organised into three transverse sections, the medial bearing three large sclerites acrosswise, the laterals bearing ridges.

References

Cambrian invertebrates Monotypic prehistoric protostome genera Fossil taxa described in 2010 Paleoscolecids {{cambrian-animal-stub