|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||Tubular borings, widely spaced, somewhat flexuous or straight, irregularly branch; 0.5 to 1.5 mm in diameter; round perforations extending throughout length of tubes. Generally excavated in brachial valves of thick-shelled specimens of Atrypa.|