|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|W. Hantzschel 1975||Vertically bundled shafts; mostly preserved as crescentic or horseshoe-shaped groups of short concave and vermiform markings (epireliefs) surrounding lower part of single shaft; upper portion of original burrow, particularly upper part of master shaft, very probably stripped away by erosion.|