|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Ptychopariida - Olenidae
It was assigned to Oleninae by Robison and Pantoja-Alor (1968); to Triarthrinae by Harrington and Leanza (1957), Poulsen (1959), Nikolaisen (1965) and Owen (1981); to Ptychopariida by Sepkoski (2002); and to Olenidae by Jell and Adrain (2003).
Is something missing? Join the Paleobiology Database and enter the data
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.