|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||Large compactly cylindrical burrow with longitudinal axis parallel to bedding; anterior and posterior ends closed and rounded with 2 or more rounded tubes, oriented obliquely or vertically to bedding, leading to surface; walls lined with flakes.|