|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||Featherlike structures of uniform size, arranged in radiating clusters consisting of sand-filled tubes; single burrows with narrow central rounded axis 2 to 4 mm wide and about 10 cm long; flanked bilaterally by closely set, opposed, leaf-shaped, lobate extensions, each up to 1 cm long, arranged regularly at equal intervals and diverging at acute angles.|