Species

Cylindrichnus helix Gibert, Netto, Tognoli et Grangeiro, 2006

Taxon description

Knaust, 2021c

Revised diagnosis. (After Ekdale & Harding 2015) Cylindrical burrow with circular or elliptical cross-section, forming a broadly arcuate shape, with concentric lining and passive fill. Secondary successive branching may occur.

Synonymy list
2006     Cylindrichnus helix — Gibert et al. , pp. 81, fig. Fig. 9a
2021     non Cylindrichnus — Knaust