Rank Genus | ||
Similar Torellella, Chancelloria, Tommotiid, Hyolitha, Latouchella | ||
Hyolithellus is a conical tubular fossil from the Cambrian, originally considered a hyolith but since has been reinterpreted (tentatively) as an annelid worm.
Its circular, thin (15–150 μm), originally phosphatic tube gets wider along its long, undulating, annulated length.
References
Hyolithellus Wikipedia(Text) CC BY-SA