|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||Fillings of cylindrical tunnels with transverse annulation, single “segments” bent; burrows straight or slightly curved, branched, 1 to 2 cm wide, of varying length, lying in bedding plane; similar to Taenidium but much larger; fillings probably fecal material passed through gut of animal.|