|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||Small almond-shaped oblong bodies preserved in convex hyporelief; tapering to sharp and obtuse points at both ends; surface commonly smooth; most symmetrical; length varying from 2 to 12 mm.|