|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||Numerous small tubes, about 15 to 20 mm long, 1 to 2 mm wide, radiating vertically and obliquely from common starting center within sediment upward to bedding plane, producing surface pattern (15 to 60 mm in diameter) consisting of radially arranged openings which are mostly sediment-filled.|